./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_right_trim_pred_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 f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:49:55,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:49:55,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:49:55,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:49:55,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:49:55,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:49:55,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:49:55,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:49:55,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:49:55,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:49:55,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:49:55,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:49:55,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:49:55,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:49:55,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:49:55,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:49:55,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:49:55,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:49:55,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:49:55,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:49:55,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:49:55,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:49:55,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:49:55,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:49:55,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:49:55,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:49:55,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:49:55,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:49:55,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:49:55,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:49:55,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:49:55,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:49:55,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:49:55,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:49:55,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:49:55,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:49:55,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:49:55,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:49:55,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:49:55,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:49:55,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:49:55,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:49:55,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:49:55,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:49:55,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:49:55,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:49:55,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:49:55,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:49:55,492 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:49:55,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:49:55,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:49:55,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:49:55,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:49:55,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:49:55,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:49:55,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:49:55,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:49:55,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:49:55,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:49:55,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:49:55,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:49:55,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:49:55,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:49:55,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:49:55,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:49:55,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:49:55,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:49:55,495 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:49:55,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:49:55,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:49:55,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:49:55,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 [2021-11-06 10:49:55,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:49:55,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:49:55,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:49:55,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:49:55,657 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:49:55,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2021-11-06 10:49:55,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b956a49/f7b6d95f2bb7448b844ca72af966fff2/FLAG9b8e34b5a [2021-11-06 10:49:56,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:49:56,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2021-11-06 10:49:56,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b956a49/f7b6d95f2bb7448b844ca72af966fff2/FLAG9b8e34b5a [2021-11-06 10:49:56,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14b956a49/f7b6d95f2bb7448b844ca72af966fff2 [2021-11-06 10:49:56,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:49:56,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:49:56,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:49:56,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:49:56,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:49:56,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:56" (1/1) ... [2021-11-06 10:49:56,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a60597b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:56, skipping insertion in model container [2021-11-06 10:49:56,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:56" (1/1) ... [2021-11-06 10:49:56,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:49:56,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:49:56,982 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_right_trim_pred_harness.i[4505,4518] [2021-11-06 10:49:56,991 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_right_trim_pred_harness.i[4565,4578] [2021-11-06 10:49:57,006 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:49:57,014 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:49:57,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,439 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,440 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,440 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,451 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,453 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,454 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:49:57,665 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:49:57,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:49:57,667 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:49:57,668 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:49:57,668 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:49:57,669 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:49:57,669 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:49:57,669 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:49:57,670 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:49:57,754 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:49:57,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:49:57,913 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:49:57,931 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_right_trim_pred_harness.i[4505,4518] [2021-11-06 10:49:57,933 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_right_trim_pred_harness.i[4565,4578] [2021-11-06 10:49:57,936 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:49:57,936 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:49:57,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:57,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:58,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:49:58,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:49:58,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:49:58,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:49:58,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:49:58,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:49:58,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:49:58,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:49:58,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:49:58,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:49:58,044 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:49:58,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:58,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:49:58,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:49:58,257 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:49:58,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58 WrapperNode [2021-11-06 10:49:58,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:49:58,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:49:58,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:49:58,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:49:58,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:49:58,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:49:58,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:49:58,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:49:58,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:49:58,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:49:58,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:49:58,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:49:58,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (1/1) ... [2021-11-06 10:49:58,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:49:58,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:49:58,533 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) [2021-11-06 10:49:58,549 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 [2021-11-06 10:49:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:49:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:49:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:49:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:49:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:49:58,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:49:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:49:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:49:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:49:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:49:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:50:05,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:50:05,412 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-06 10:50:05,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:05 BoogieIcfgContainer [2021-11-06 10:50:05,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:50:05,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:50:05,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:50:05,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:50:05,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:56" (1/3) ... [2021-11-06 10:50:05,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f40db04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:05, skipping insertion in model container [2021-11-06 10:50:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:58" (2/3) ... [2021-11-06 10:50:05,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f40db04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:05, skipping insertion in model container [2021-11-06 10:50:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:05" (3/3) ... [2021-11-06 10:50:05,425 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_right_trim_pred_harness.i [2021-11-06 10:50:05,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:50:05,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 10:50:05,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:50:05,481 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 [2021-11-06 10:50:05,482 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 10:50:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 118 states have (on average 1.4491525423728813) internal successors, (171), 123 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 10:50:05,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:05,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:05,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash 960385600, now seen corresponding path program 1 times [2021-11-06 10:50:05,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:05,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876821743] [2021-11-06 10:50:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:05,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:06,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:06,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876821743] [2021-11-06 10:50:06,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876821743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:06,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:06,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:50:06,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855665991] [2021-11-06 10:50:06,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:50:06,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:50:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:50:06,037 INFO L87 Difference]: Start difference. First operand has 124 states, 118 states have (on average 1.4491525423728813) internal successors, (171), 123 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 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) [2021-11-06 10:50:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:06,053 INFO L93 Difference]: Finished difference Result 244 states and 337 transitions. [2021-11-06 10:50:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:50:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 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 [2021-11-06 10:50:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:06,060 INFO L225 Difference]: With dead ends: 244 [2021-11-06 10:50:06,060 INFO L226 Difference]: Without dead ends: 117 [2021-11-06 10:50:06,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:50:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-06 10:50:06,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-06 10:50:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 116 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2021-11-06 10:50:06,086 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 30 [2021-11-06 10:50:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:06,087 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2021-11-06 10:50:06,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 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) [2021-11-06 10:50:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2021-11-06 10:50:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 10:50:06,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:06,088 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:06,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:50:06,089 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -649638665, now seen corresponding path program 1 times [2021-11-06 10:50:06,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:06,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205398219] [2021-11-06 10:50:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:06,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:06,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:06,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205398219] [2021-11-06 10:50:06,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205398219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:06,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:06,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:50:06,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755810023] [2021-11-06 10:50:06,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:50:06,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:50:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:50:06,356 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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) [2021-11-06 10:50:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:06,550 INFO L93 Difference]: Finished difference Result 213 states and 273 transitions. [2021-11-06 10:50:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:50:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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 [2021-11-06 10:50:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:06,551 INFO L225 Difference]: With dead ends: 213 [2021-11-06 10:50:06,551 INFO L226 Difference]: Without dead ends: 117 [2021-11-06 10:50:06,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:50:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-06 10:50:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-06 10:50:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.3125) internal successors, (147), 116 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2021-11-06 10:50:06,562 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 32 [2021-11-06 10:50:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:06,562 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-11-06 10:50:06,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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) [2021-11-06 10:50:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2021-11-06 10:50:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 10:50:06,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:06,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:06,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:50:06,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:06,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1150788759, now seen corresponding path program 1 times [2021-11-06 10:50:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:06,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074357701] [2021-11-06 10:50:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:06,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:07,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:07,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074357701] [2021-11-06 10:50:07,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074357701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:07,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:07,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:50:07,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014429682] [2021-11-06 10:50:07,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:50:07,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:50:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:50:07,003 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 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) [2021-11-06 10:50:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:07,337 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2021-11-06 10:50:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:50:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 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 [2021-11-06 10:50:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:07,339 INFO L225 Difference]: With dead ends: 174 [2021-11-06 10:50:07,339 INFO L226 Difference]: Without dead ends: 117 [2021-11-06 10:50:07,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:50:07,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-06 10:50:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-06 10:50:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 116 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) [2021-11-06 10:50:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2021-11-06 10:50:07,344 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 36 [2021-11-06 10:50:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:07,345 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2021-11-06 10:50:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 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) [2021-11-06 10:50:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2021-11-06 10:50:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 10:50:07,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:07,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:07,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:50:07,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash 410162962, now seen corresponding path program 1 times [2021-11-06 10:50:07,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:07,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620808941] [2021-11-06 10:50:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:07,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:07,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:07,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620808941] [2021-11-06 10:50:07,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620808941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:07,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:07,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:50:07,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79167066] [2021-11-06 10:50:07,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:50:07,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:50:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:50:07,880 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:08,773 INFO L93 Difference]: Finished difference Result 216 states and 261 transitions. [2021-11-06 10:50:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:50:08,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-06 10:50:08,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:08,774 INFO L225 Difference]: With dead ends: 216 [2021-11-06 10:50:08,775 INFO L226 Difference]: Without dead ends: 208 [2021-11-06 10:50:08,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:50:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-06 10:50:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 133. [2021-11-06 10:50:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.265625) internal successors, (162), 132 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2021-11-06 10:50:08,782 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 38 [2021-11-06 10:50:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:08,783 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2021-11-06 10:50:08,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2021-11-06 10:50:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 10:50:08,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:08,789 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:08,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 10:50:08,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash -235054390, now seen corresponding path program 1 times [2021-11-06 10:50:08,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:08,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899104484] [2021-11-06 10:50:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:08,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:09,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:09,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899104484] [2021-11-06 10:50:09,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899104484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:09,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:09,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:50:09,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341974206] [2021-11-06 10:50:09,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:50:09,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:50:09,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:50:09,499 INFO L87 Difference]: Start difference. First operand 133 states and 162 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) [2021-11-06 10:50:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:20,166 INFO L93 Difference]: Finished difference Result 399 states and 482 transitions. [2021-11-06 10:50:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:50:20,167 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 [2021-11-06 10:50:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:20,169 INFO L225 Difference]: With dead ends: 399 [2021-11-06 10:50:20,169 INFO L226 Difference]: Without dead ends: 292 [2021-11-06 10:50:20,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:50:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-06 10:50:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 207. [2021-11-06 10:50:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.2425742574257426) internal successors, (251), 206 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 251 transitions. [2021-11-06 10:50:20,184 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 251 transitions. Word has length 42 [2021-11-06 10:50:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:20,184 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 251 transitions. [2021-11-06 10:50:20,184 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) [2021-11-06 10:50:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 251 transitions. [2021-11-06 10:50:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 10:50:20,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:20,186 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:20,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 10:50:20,186 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash 324843685, now seen corresponding path program 1 times [2021-11-06 10:50:20,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:20,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343236567] [2021-11-06 10:50:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:20,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:20,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:20,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343236567] [2021-11-06 10:50:20,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343236567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:20,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:20,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:50:20,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940028450] [2021-11-06 10:50:20,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:50:20,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:50:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:50:20,475 INFO L87 Difference]: Start difference. First operand 207 states and 251 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2021-11-06 10:50:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:20,705 INFO L93 Difference]: Finished difference Result 264 states and 317 transitions. [2021-11-06 10:50:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:50:20,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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 [2021-11-06 10:50:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:20,709 INFO L225 Difference]: With dead ends: 264 [2021-11-06 10:50:20,709 INFO L226 Difference]: Without dead ends: 207 [2021-11-06 10:50:20,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:50:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-06 10:50:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-06 10:50:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.2326732673267327) internal successors, (249), 206 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 249 transitions. [2021-11-06 10:50:20,724 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 249 transitions. Word has length 43 [2021-11-06 10:50:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:20,727 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 249 transitions. [2021-11-06 10:50:20,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 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) [2021-11-06 10:50:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 249 transitions. [2021-11-06 10:50:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 10:50:20,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:20,743 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:20,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 10:50:20,743 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash 495838041, now seen corresponding path program 1 times [2021-11-06 10:50:20,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:20,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63328152] [2021-11-06 10:50:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:20,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:20,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:20,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63328152] [2021-11-06 10:50:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63328152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:20,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:20,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 10:50:20,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950749079] [2021-11-06 10:50:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 10:50:20,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 10:50:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 10:50:20,931 INFO L87 Difference]: Start difference. First operand 207 states and 249 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2021-11-06 10:50:20,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:20,964 INFO L93 Difference]: Finished difference Result 298 states and 361 transitions. [2021-11-06 10:50:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 10:50:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 [2021-11-06 10:50:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:20,967 INFO L225 Difference]: With dead ends: 298 [2021-11-06 10:50:20,967 INFO L226 Difference]: Without dead ends: 210 [2021-11-06 10:50:20,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 10:50:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-06 10:50:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-06 10:50:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.2292682926829268) internal successors, (252), 209 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 252 transitions. [2021-11-06 10:50:20,977 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 252 transitions. Word has length 45 [2021-11-06 10:50:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:20,977 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 252 transitions. [2021-11-06 10:50:20,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2021-11-06 10:50:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 252 transitions. [2021-11-06 10:50:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 10:50:20,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:20,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:20,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 10:50:20,979 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2004884674, now seen corresponding path program 1 times [2021-11-06 10:50:20,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:20,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232488834] [2021-11-06 10:50:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:20,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:21,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:21,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232488834] [2021-11-06 10:50:21,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232488834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:21,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:21,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:50:21,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440150985] [2021-11-06 10:50:21,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:50:21,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:50:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:50:21,555 INFO L87 Difference]: Start difference. First operand 210 states and 252 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:22,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:22,510 INFO L93 Difference]: Finished difference Result 433 states and 511 transitions. [2021-11-06 10:50:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 10:50:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-06 10:50:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:22,511 INFO L225 Difference]: With dead ends: 433 [2021-11-06 10:50:22,512 INFO L226 Difference]: Without dead ends: 262 [2021-11-06 10:50:22,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:50:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-06 10:50:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 210. [2021-11-06 10:50:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.2195121951219512) internal successors, (250), 209 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) [2021-11-06 10:50:22,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 250 transitions. [2021-11-06 10:50:22,519 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 250 transitions. Word has length 46 [2021-11-06 10:50:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:22,519 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 250 transitions. [2021-11-06 10:50:22,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 250 transitions. [2021-11-06 10:50:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 10:50:22,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:22,520 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:22,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 10:50:22,520 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:22,521 INFO L85 PathProgramCache]: Analyzing trace with hash -954265451, now seen corresponding path program 1 times [2021-11-06 10:50:22,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:22,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85057827] [2021-11-06 10:50:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:22,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:50:23,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:23,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85057827] [2021-11-06 10:50:23,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85057827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:23,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:23,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:50:23,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054901916] [2021-11-06 10:50:23,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:50:23,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:50:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:50:23,218 INFO L87 Difference]: Start difference. First operand 210 states and 250 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:31,205 INFO L93 Difference]: Finished difference Result 412 states and 485 transitions. [2021-11-06 10:50:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:50:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-06 10:50:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:31,207 INFO L225 Difference]: With dead ends: 412 [2021-11-06 10:50:31,207 INFO L226 Difference]: Without dead ends: 292 [2021-11-06 10:50:31,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:50:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-06 10:50:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 207. [2021-11-06 10:50:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.2128712871287128) internal successors, (245), 206 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2021-11-06 10:50:31,214 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 47 [2021-11-06 10:50:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:31,214 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2021-11-06 10:50:31,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2021-11-06 10:50:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 10:50:31,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:31,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:31,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 10:50:31,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 93394749, now seen corresponding path program 1 times [2021-11-06 10:50:31,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:31,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728112134] [2021-11-06 10:50:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:31,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:31,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:31,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728112134] [2021-11-06 10:50:31,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728112134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:31,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:31,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:50:31,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198335185] [2021-11-06 10:50:31,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 10:50:31,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 10:50:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:50:31,647 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2021-11-06 10:50:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:34,439 INFO L93 Difference]: Finished difference Result 400 states and 473 transitions. [2021-11-06 10:50:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:50:34,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 [2021-11-06 10:50:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:34,441 INFO L225 Difference]: With dead ends: 400 [2021-11-06 10:50:34,441 INFO L226 Difference]: Without dead ends: 233 [2021-11-06 10:50:34,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:50:34,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-06 10:50:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 207. [2021-11-06 10:50:34,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.1732673267326732) internal successors, (237), 206 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2021-11-06 10:50:34,447 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 48 [2021-11-06 10:50:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:34,447 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2021-11-06 10:50:34,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2021-11-06 10:50:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2021-11-06 10:50:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 10:50:34,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:34,448 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:34,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 10:50:34,448 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:34,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2144378747, now seen corresponding path program 1 times [2021-11-06 10:50:34,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:34,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933438787] [2021-11-06 10:50:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:34,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:34,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:34,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933438787] [2021-11-06 10:50:34,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933438787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:34,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:50:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496983178] [2021-11-06 10:50:34,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:50:34,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:50:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:50:34,965 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2021-11-06 10:50:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:47,397 INFO L93 Difference]: Finished difference Result 542 states and 620 transitions. [2021-11-06 10:50:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:50:47,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 [2021-11-06 10:50:47,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:47,401 INFO L225 Difference]: With dead ends: 542 [2021-11-06 10:50:47,401 INFO L226 Difference]: Without dead ends: 478 [2021-11-06 10:50:47,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-11-06 10:50:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-06 10:50:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 193. [2021-11-06 10:50:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.1648936170212767) internal successors, (219), 192 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 219 transitions. [2021-11-06 10:50:47,409 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 219 transitions. Word has length 48 [2021-11-06 10:50:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:47,409 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 219 transitions. [2021-11-06 10:50:47,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2021-11-06 10:50:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 219 transitions. [2021-11-06 10:50:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 10:50:47,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:47,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:47,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 10:50:47,410 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash 870337434, now seen corresponding path program 1 times [2021-11-06 10:50:47,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:47,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107580422] [2021-11-06 10:50:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:47,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:47,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:47,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107580422] [2021-11-06 10:50:47,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107580422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:47,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:47,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:50:47,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718791037] [2021-11-06 10:50:47,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:50:47,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:50:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:50:47,704 INFO L87 Difference]: Start difference. First operand 193 states and 219 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:50:50,275 INFO L93 Difference]: Finished difference Result 353 states and 402 transitions. [2021-11-06 10:50:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:50:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 10:50:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:50:50,277 INFO L225 Difference]: With dead ends: 353 [2021-11-06 10:50:50,277 INFO L226 Difference]: Without dead ends: 193 [2021-11-06 10:50:50,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:50:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-06 10:50:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-06 10:50:50,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.127659574468085) internal successors, (212), 192 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2021-11-06 10:50:50,282 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 49 [2021-11-06 10:50:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:50:50,282 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2021-11-06 10:50:50,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:50:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2021-11-06 10:50:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 10:50:50,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:50:50,283 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:50:50,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 10:50:50,283 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:50:50,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:50:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash 190279064, now seen corresponding path program 1 times [2021-11-06 10:50:50,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:50:50,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732325233] [2021-11-06 10:50:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:50:50,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:50:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:50:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:50:50,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:50:50,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732325233] [2021-11-06 10:50:50,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732325233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:50:50,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:50:50,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 10:50:50,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094365183] [2021-11-06 10:50:50,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 10:50:50,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:50:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 10:50:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:50:50,914 INFO L87 Difference]: Start difference. First operand 193 states and 212 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:01,463 INFO L93 Difference]: Finished difference Result 313 states and 339 transitions. [2021-11-06 10:51:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-06 10:51:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 10:51:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:01,464 INFO L225 Difference]: With dead ends: 313 [2021-11-06 10:51:01,465 INFO L226 Difference]: Without dead ends: 268 [2021-11-06 10:51:01,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:51:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-06 10:51:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 204. [2021-11-06 10:51:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.120603015075377) internal successors, (223), 203 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 223 transitions. [2021-11-06 10:51:01,488 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 223 transitions. Word has length 49 [2021-11-06 10:51:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:01,488 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 223 transitions. [2021-11-06 10:51:01,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 223 transitions. [2021-11-06 10:51:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 10:51:01,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:01,489 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:01,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 10:51:01,489 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 482349700, now seen corresponding path program 1 times [2021-11-06 10:51:01,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:01,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045571706] [2021-11-06 10:51:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:01,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:51:02,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:02,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045571706] [2021-11-06 10:51:02,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045571706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:02,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:02,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:51:02,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576281711] [2021-11-06 10:51:02,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:51:02,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:51:02,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:51:02,186 INFO L87 Difference]: Start difference. First operand 204 states and 223 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-11-06 10:51:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:12,149 INFO L93 Difference]: Finished difference Result 603 states and 662 transitions. [2021-11-06 10:51:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-06 10:51:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2021-11-06 10:51:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:12,151 INFO L225 Difference]: With dead ends: 603 [2021-11-06 10:51:12,151 INFO L226 Difference]: Without dead ends: 483 [2021-11-06 10:51:12,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-11-06 10:51:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-06 10:51:12,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 201. [2021-11-06 10:51:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.1122448979591837) internal successors, (218), 200 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) [2021-11-06 10:51:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 218 transitions. [2021-11-06 10:51:12,159 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 218 transitions. Word has length 53 [2021-11-06 10:51:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:12,159 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 218 transitions. [2021-11-06 10:51:12,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-11-06 10:51:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 218 transitions. [2021-11-06 10:51:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 10:51:12,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:12,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:12,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 10:51:12,160 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:12,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1409745750, now seen corresponding path program 1 times [2021-11-06 10:51:12,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:12,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293107846] [2021-11-06 10:51:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:12,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:51:12,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:12,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293107846] [2021-11-06 10:51:12,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293107846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:12,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:12,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:51:12,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686833314] [2021-11-06 10:51:12,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:51:12,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:51:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:51:12,712 INFO L87 Difference]: Start difference. First operand 201 states and 218 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-11-06 10:51:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:22,732 INFO L93 Difference]: Finished difference Result 566 states and 618 transitions. [2021-11-06 10:51:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 10:51:22,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 [2021-11-06 10:51:22,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:22,735 INFO L225 Difference]: With dead ends: 566 [2021-11-06 10:51:22,735 INFO L226 Difference]: Without dead ends: 482 [2021-11-06 10:51:22,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-06 10:51:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-06 10:51:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 203. [2021-11-06 10:51:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.1111111111111112) internal successors, (220), 202 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) [2021-11-06 10:51:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 220 transitions. [2021-11-06 10:51:22,742 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 220 transitions. Word has length 54 [2021-11-06 10:51:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:22,743 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 220 transitions. [2021-11-06 10:51:22,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-11-06 10:51:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 220 transitions. [2021-11-06 10:51:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 10:51:22,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:22,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:22,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 10:51:22,744 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2092937159, now seen corresponding path program 1 times [2021-11-06 10:51:22,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:22,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187952055] [2021-11-06 10:51:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:22,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:51:23,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:23,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187952055] [2021-11-06 10:51:23,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187952055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:23,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:23,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:51:23,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119974488] [2021-11-06 10:51:23,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:51:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:23,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:51:23,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:51:23,392 INFO L87 Difference]: Start difference. First operand 203 states and 220 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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) [2021-11-06 10:51:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:35,952 INFO L93 Difference]: Finished difference Result 502 states and 544 transitions. [2021-11-06 10:51:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:51:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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 [2021-11-06 10:51:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:35,960 INFO L225 Difference]: With dead ends: 502 [2021-11-06 10:51:35,960 INFO L226 Difference]: Without dead ends: 457 [2021-11-06 10:51:35,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-06 10:51:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-11-06 10:51:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 173. [2021-11-06 10:51:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.1130952380952381) internal successors, (187), 172 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2021-11-06 10:51:35,967 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 55 [2021-11-06 10:51:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2021-11-06 10:51:35,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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) [2021-11-06 10:51:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2021-11-06 10:51:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 10:51:35,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:35,968 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:35,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 10:51:35,968 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:35,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:35,969 INFO L85 PathProgramCache]: Analyzing trace with hash 485245166, now seen corresponding path program 1 times [2021-11-06 10:51:35,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:35,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232689954] [2021-11-06 10:51:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:35,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:51:38,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:38,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232689954] [2021-11-06 10:51:38,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232689954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:38,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:38,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-06 10:51:38,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339705541] [2021-11-06 10:51:38,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 10:51:38,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 10:51:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:51:38,552 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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) [2021-11-06 10:51:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:43,737 INFO L93 Difference]: Finished difference Result 393 states and 422 transitions. [2021-11-06 10:51:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:51:43,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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 [2021-11-06 10:51:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:43,738 INFO L225 Difference]: With dead ends: 393 [2021-11-06 10:51:43,738 INFO L226 Difference]: Without dead ends: 243 [2021-11-06 10:51:43,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:51:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-06 10:51:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 177. [2021-11-06 10:51:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.1104651162790697) internal successors, (191), 176 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 191 transitions. [2021-11-06 10:51:43,745 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 191 transitions. Word has length 56 [2021-11-06 10:51:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:43,745 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 191 transitions. [2021-11-06 10:51:43,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 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) [2021-11-06 10:51:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 191 transitions. [2021-11-06 10:51:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 10:51:43,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:43,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:43,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 10:51:43,746 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:43,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:43,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1309942923, now seen corresponding path program 1 times [2021-11-06 10:51:43,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:43,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168560682] [2021-11-06 10:51:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:43,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:51:43,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:43,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168560682] [2021-11-06 10:51:43,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168560682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:43,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:43,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:51:43,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621417312] [2021-11-06 10:51:43,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:51:43,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:51:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:51:43,935 INFO L87 Difference]: Start difference. First operand 177 states and 191 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:44,042 INFO L93 Difference]: Finished difference Result 188 states and 201 transitions. [2021-11-06 10:51:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:51:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-06 10:51:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:44,043 INFO L225 Difference]: With dead ends: 188 [2021-11-06 10:51:44,043 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 10:51:44,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:51:44,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 10:51:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 10:51:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.1046511627906976) internal successors, (190), 176 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2021-11-06 10:51:44,049 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 58 [2021-11-06 10:51:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:44,050 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2021-11-06 10:51:44,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2021-11-06 10:51:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 10:51:44,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:44,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:44,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 10:51:44,051 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1050364765, now seen corresponding path program 1 times [2021-11-06 10:51:44,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:44,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549703062] [2021-11-06 10:51:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:44,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:51:46,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:46,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549703062] [2021-11-06 10:51:46,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549703062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:46,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:46,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:51:46,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557337239] [2021-11-06 10:51:46,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:51:46,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:51:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:51:46,841 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:51:52,977 INFO L93 Difference]: Finished difference Result 446 states and 474 transitions. [2021-11-06 10:51:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 10:51:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-06 10:51:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:51:52,978 INFO L225 Difference]: With dead ends: 446 [2021-11-06 10:51:52,978 INFO L226 Difference]: Without dead ends: 375 [2021-11-06 10:51:52,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-11-06 10:51:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-06 10:51:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 239. [2021-11-06 10:51:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 234 states have (on average 1.1111111111111112) internal successors, (260), 238 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 260 transitions. [2021-11-06 10:51:52,987 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 260 transitions. Word has length 59 [2021-11-06 10:51:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:51:52,988 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 260 transitions. [2021-11-06 10:51:52,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:51:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 260 transitions. [2021-11-06 10:51:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 10:51:52,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:51:52,988 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:51:52,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 10:51:52,989 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:51:52,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:51:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash 224519228, now seen corresponding path program 1 times [2021-11-06 10:51:52,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:51:52,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453104191] [2021-11-06 10:51:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:51:52,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:51:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:51:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:51:53,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:51:53,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453104191] [2021-11-06 10:51:53,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453104191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:51:53,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:51:53,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 10:51:53,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196100045] [2021-11-06 10:51:53,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 10:51:53,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:51:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 10:51:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:51:53,607 INFO L87 Difference]: Start difference. First operand 239 states and 260 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 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) [2021-11-06 10:52:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:52:00,932 INFO L93 Difference]: Finished difference Result 360 states and 388 transitions. [2021-11-06 10:52:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:52:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 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 [2021-11-06 10:52:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:52:00,934 INFO L225 Difference]: With dead ends: 360 [2021-11-06 10:52:00,934 INFO L226 Difference]: Without dead ends: 352 [2021-11-06 10:52:00,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:52:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-06 10:52:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 240. [2021-11-06 10:52:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.1063829787234043) internal successors, (260), 239 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 260 transitions. [2021-11-06 10:52:00,944 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 260 transitions. Word has length 61 [2021-11-06 10:52:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:52:00,944 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 260 transitions. [2021-11-06 10:52:00,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 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) [2021-11-06 10:52:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 260 transitions. [2021-11-06 10:52:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 10:52:00,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:52:00,945 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:52:00,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 10:52:00,945 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:52:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:52:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash -375484704, now seen corresponding path program 1 times [2021-11-06 10:52:00,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:52:00,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117158587] [2021-11-06 10:52:00,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:52:00,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:52:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:52:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 10:52:03,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:52:03,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117158587] [2021-11-06 10:52:03,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117158587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:52:03,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:52:03,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:52:03,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514588010] [2021-11-06 10:52:03,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:52:03,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:52:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:52:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:52:03,788 INFO L87 Difference]: Start difference. First operand 240 states and 260 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 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) [2021-11-06 10:52:08,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:52:08,503 INFO L93 Difference]: Finished difference Result 486 states and 517 transitions. [2021-11-06 10:52:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:52:08,504 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 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 62 [2021-11-06 10:52:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:52:08,505 INFO L225 Difference]: With dead ends: 486 [2021-11-06 10:52:08,505 INFO L226 Difference]: Without dead ends: 306 [2021-11-06 10:52:08,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2021-11-06 10:52:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-06 10:52:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 181. [2021-11-06 10:52:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0965909090909092) internal successors, (193), 180 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2021-11-06 10:52:08,512 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 62 [2021-11-06 10:52:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:52:08,512 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2021-11-06 10:52:08,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 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) [2021-11-06 10:52:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2021-11-06 10:52:08,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 10:52:08,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:52:08,513 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:52:08,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 10:52:08,513 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:52:08,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:52:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1944530334, now seen corresponding path program 1 times [2021-11-06 10:52:08,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:52:08,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410708473] [2021-11-06 10:52:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:52:08,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:52:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:52:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:52:11,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:52:11,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410708473] [2021-11-06 10:52:11,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410708473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:52:11,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:52:11,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 10:52:11,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577047006] [2021-11-06 10:52:11,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:52:11,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:52:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:52:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-06 10:52:11,669 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:52:28,163 INFO L93 Difference]: Finished difference Result 427 states and 453 transitions. [2021-11-06 10:52:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-06 10:52:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 10:52:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:52:28,165 INFO L225 Difference]: With dead ends: 427 [2021-11-06 10:52:28,165 INFO L226 Difference]: Without dead ends: 353 [2021-11-06 10:52:28,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 10:52:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-06 10:52:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 222. [2021-11-06 10:52:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1059907834101383) internal successors, (240), 221 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 240 transitions. [2021-11-06 10:52:28,175 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 240 transitions. Word has length 62 [2021-11-06 10:52:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:52:28,175 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 240 transitions. [2021-11-06 10:52:28,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 240 transitions. [2021-11-06 10:52:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 10:52:28,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:52:28,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:52:28,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 10:52:28,176 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:52:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:52:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1831062709, now seen corresponding path program 1 times [2021-11-06 10:52:28,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:52:28,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911409127] [2021-11-06 10:52:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:52:28,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:52:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:52:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:52:28,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:52:28,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911409127] [2021-11-06 10:52:28,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911409127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:52:28,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:52:28,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:52:28,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775099661] [2021-11-06 10:52:28,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:52:28,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:52:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:52:28,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:52:28,800 INFO L87 Difference]: Start difference. First operand 222 states and 240 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:52:36,343 INFO L93 Difference]: Finished difference Result 280 states and 299 transitions. [2021-11-06 10:52:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 10:52:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 10:52:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:52:36,345 INFO L225 Difference]: With dead ends: 280 [2021-11-06 10:52:36,345 INFO L226 Difference]: Without dead ends: 267 [2021-11-06 10:52:36,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 10:52:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-06 10:52:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2021-11-06 10:52:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 260 states have (on average 1.0884615384615384) internal successors, (283), 264 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 283 transitions. [2021-11-06 10:52:36,356 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 283 transitions. Word has length 64 [2021-11-06 10:52:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:52:36,356 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 283 transitions. [2021-11-06 10:52:36,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 283 transitions. [2021-11-06 10:52:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 10:52:36,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:52:36,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:52:36,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 10:52:36,357 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:52:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:52:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2002093992, now seen corresponding path program 1 times [2021-11-06 10:52:36,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:52:36,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984922219] [2021-11-06 10:52:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:52:36,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:52:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:52:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:52:37,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:52:37,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984922219] [2021-11-06 10:52:37,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984922219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:52:37,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:52:37,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 10:52:37,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619542756] [2021-11-06 10:52:37,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 10:52:37,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:52:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 10:52:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:52:37,275 INFO L87 Difference]: Start difference. First operand 265 states and 283 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:52:53,113 INFO L93 Difference]: Finished difference Result 309 states and 327 transitions. [2021-11-06 10:52:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 10:52:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-06 10:52:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:52:53,115 INFO L225 Difference]: With dead ends: 309 [2021-11-06 10:52:53,115 INFO L226 Difference]: Without dead ends: 251 [2021-11-06 10:52:53,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-11-06 10:52:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-06 10:52:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 209. [2021-11-06 10:52:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.1029411764705883) internal successors, (225), 208 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) [2021-11-06 10:52:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 225 transitions. [2021-11-06 10:52:53,124 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 225 transitions. Word has length 64 [2021-11-06 10:52:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:52:53,125 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 225 transitions. [2021-11-06 10:52:53,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:52:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 225 transitions. [2021-11-06 10:52:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 10:52:53,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:52:53,126 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:52:53,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 10:52:53,126 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:52:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:52:53,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1188769797, now seen corresponding path program 1 times [2021-11-06 10:52:53,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:52:53,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384415812] [2021-11-06 10:52:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:52:53,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:52:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:52:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:52:56,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:52:56,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384415812] [2021-11-06 10:52:56,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384415812] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:52:56,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355016632] [2021-11-06 10:52:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:52:56,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:52:56,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:52:56,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:52:56,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:52:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:52:57,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-06 10:52:57,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:52:57,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-06 10:52:58,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:52:58,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-06 10:52:58,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:52:58,369 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-06 10:52:58,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2021-11-06 10:52:58,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 18 [2021-11-06 10:52:59,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-06 10:52:59,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:52:59,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-06 10:52:59,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:52:59,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-06 10:53:00,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 10:53:00,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2021-11-06 10:53:00,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-11-06 10:53:00,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-06 10:53:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:53:00,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355016632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:53:00,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 10:53:00,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 30 [2021-11-06 10:53:00,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322737437] [2021-11-06 10:53:00,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-06 10:53:00,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:53:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-06 10:53:00,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2021-11-06 10:53:00,773 INFO L87 Difference]: Start difference. First operand 209 states and 225 transitions. Second operand has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:53:43,660 INFO L93 Difference]: Finished difference Result 352 states and 380 transitions. [2021-11-06 10:53:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-06 10:53:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 10:53:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:53:43,661 INFO L225 Difference]: With dead ends: 352 [2021-11-06 10:53:43,661 INFO L226 Difference]: Without dead ends: 278 [2021-11-06 10:53:43,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=854, Invalid=2928, Unknown=0, NotChecked=0, Total=3782 [2021-11-06 10:53:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-06 10:53:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 154. [2021-11-06 10:53:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 151 states have (on average 1.0728476821192052) internal successors, (162), 153 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2021-11-06 10:53:43,673 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 65 [2021-11-06 10:53:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:53:43,673 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2021-11-06 10:53:43,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2021-11-06 10:53:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 10:53:43,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:53:43,674 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:53:43,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 10:53:43,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-06 10:53:43,898 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:53:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:53:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -23690172, now seen corresponding path program 1 times [2021-11-06 10:53:43,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:53:43,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504193705] [2021-11-06 10:53:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:53:43,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:53:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:53:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:53:44,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:53:44,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504193705] [2021-11-06 10:53:44,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504193705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:53:44,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:53:44,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:53:44,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498376788] [2021-11-06 10:53:44,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:53:44,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:53:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:53:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:53:44,354 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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) [2021-11-06 10:53:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:53:51,773 INFO L93 Difference]: Finished difference Result 294 states and 312 transitions. [2021-11-06 10:53:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 10:53:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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 [2021-11-06 10:53:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:53:51,775 INFO L225 Difference]: With dead ends: 294 [2021-11-06 10:53:51,775 INFO L226 Difference]: Without dead ends: 230 [2021-11-06 10:53:51,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-06 10:53:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-06 10:53:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 173. [2021-11-06 10:53:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 170 states have (on average 1.0705882352941176) internal successors, (182), 172 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2021-11-06 10:53:51,784 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 69 [2021-11-06 10:53:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:53:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2021-11-06 10:53:51,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 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) [2021-11-06 10:53:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2021-11-06 10:53:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 10:53:51,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:53:51,786 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:53:51,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 10:53:51,786 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:53:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:53:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1058361341, now seen corresponding path program 1 times [2021-11-06 10:53:51,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:53:51,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393506788] [2021-11-06 10:53:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:53:51,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:53:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:53:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 10:53:52,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:53:52,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393506788] [2021-11-06 10:53:52,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393506788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:53:52,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:53:52,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 10:53:52,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805418967] [2021-11-06 10:53:52,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:53:52,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:53:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:53:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:53:52,330 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:53:57,163 INFO L93 Difference]: Finished difference Result 252 states and 266 transitions. [2021-11-06 10:53:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:53:57,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 10:53:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:53:57,164 INFO L225 Difference]: With dead ends: 252 [2021-11-06 10:53:57,164 INFO L226 Difference]: Without dead ends: 195 [2021-11-06 10:53:57,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:53:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-06 10:53:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2021-11-06 10:53:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.0698924731182795) internal successors, (199), 188 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2021-11-06 10:53:57,173 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 72 [2021-11-06 10:53:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:53:57,173 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2021-11-06 10:53:57,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:53:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2021-11-06 10:53:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 10:53:57,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:53:57,173 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:53:57,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 10:53:57,174 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:53:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:53:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1034320377, now seen corresponding path program 1 times [2021-11-06 10:53:57,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:53:57,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936060352] [2021-11-06 10:53:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:53:57,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:53:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:54:00,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:54:00,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936060352] [2021-11-06 10:54:00,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936060352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:54:00,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709365283] [2021-11-06 10:54:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:00,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:54:00,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:54:00,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:54:00,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 10:54:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:01,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-06 10:54:01,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:54:01,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 10:54:01,741 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 10:54:01,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 10:54:02,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-06 10:54:02,816 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-06 10:54:02,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-06 10:54:03,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-11-06 10:54:03,135 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-06 10:54:03,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 26 [2021-11-06 10:54:04,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:54:04,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:54:04,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:54:04,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:54:04,095 INFO L354 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2021-11-06 10:54:04,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2021-11-06 10:54:04,961 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-06 10:54:04,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 33 [2021-11-06 10:54:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 10:54:05,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709365283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:54:05,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 10:54:05,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [23] total 36 [2021-11-06 10:54:05,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347483459] [2021-11-06 10:54:05,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 10:54:05,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:54:05,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 10:54:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 10:54:05,328 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:54:22,186 INFO L93 Difference]: Finished difference Result 237 states and 249 transitions. [2021-11-06 10:54:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 10:54:22,186 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 10:54:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:54:22,187 INFO L225 Difference]: With dead ends: 237 [2021-11-06 10:54:22,187 INFO L226 Difference]: Without dead ends: 190 [2021-11-06 10:54:22,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=361, Invalid=2501, Unknown=0, NotChecked=0, Total=2862 [2021-11-06 10:54:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-06 10:54:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2021-11-06 10:54:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.0611111111111111) internal successors, (191), 181 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 191 transitions. [2021-11-06 10:54:22,197 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 191 transitions. Word has length 74 [2021-11-06 10:54:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:54:22,197 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 191 transitions. [2021-11-06 10:54:22,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:22,198 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 191 transitions. [2021-11-06 10:54:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:54:22,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:54:22,198 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:54:22,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 10:54:22,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-06 10:54:22,409 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:54:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:54:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1442971818, now seen corresponding path program 1 times [2021-11-06 10:54:22,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:54:22,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786297707] [2021-11-06 10:54:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:22,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:54:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:54:23,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:54:23,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786297707] [2021-11-06 10:54:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786297707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:54:23,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:54:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:54:23,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475142959] [2021-11-06 10:54:23,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:54:23,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:54:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:54:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:54:23,048 INFO L87 Difference]: Start difference. First operand 182 states and 191 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:54:30,274 INFO L93 Difference]: Finished difference Result 223 states and 233 transitions. [2021-11-06 10:54:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 10:54:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:54:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:54:30,275 INFO L225 Difference]: With dead ends: 223 [2021-11-06 10:54:30,276 INFO L226 Difference]: Without dead ends: 210 [2021-11-06 10:54:30,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-06 10:54:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-06 10:54:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 197. [2021-11-06 10:54:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.0564102564102564) internal successors, (206), 196 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) [2021-11-06 10:54:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 206 transitions. [2021-11-06 10:54:30,286 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 206 transitions. Word has length 76 [2021-11-06 10:54:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:54:30,287 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 206 transitions. [2021-11-06 10:54:30,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 206 transitions. [2021-11-06 10:54:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 10:54:30,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:54:30,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:54:30,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 10:54:30,288 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:54:30,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:54:30,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1271940535, now seen corresponding path program 1 times [2021-11-06 10:54:30,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:54:30,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526311098] [2021-11-06 10:54:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:30,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:54:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:54:30,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:54:30,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526311098] [2021-11-06 10:54:30,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526311098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:54:30,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:54:30,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:54:30,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941066500] [2021-11-06 10:54:30,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:54:30,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:54:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:54:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:54:30,742 INFO L87 Difference]: Start difference. First operand 197 states and 206 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:54:38,159 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2021-11-06 10:54:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 10:54:38,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 10:54:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:54:38,160 INFO L225 Difference]: With dead ends: 263 [2021-11-06 10:54:38,160 INFO L226 Difference]: Without dead ends: 197 [2021-11-06 10:54:38,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:54:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-06 10:54:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2021-11-06 10:54:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.0635838150289016) 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) [2021-11-06 10:54:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2021-11-06 10:54:38,173 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 76 [2021-11-06 10:54:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:54:38,174 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 184 transitions. [2021-11-06 10:54:38,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 184 transitions. [2021-11-06 10:54:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 10:54:38,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:54:38,175 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:54:38,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-06 10:54:38,175 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:54:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:54:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1815229360, now seen corresponding path program 1 times [2021-11-06 10:54:38,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:54:38,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349332739] [2021-11-06 10:54:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:38,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:54:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 10:54:38,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:54:38,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349332739] [2021-11-06 10:54:38,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349332739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:54:38,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:54:38,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 10:54:38,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100646483] [2021-11-06 10:54:38,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 10:54:38,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:54:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 10:54:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 10:54:38,906 INFO L87 Difference]: Start difference. First operand 175 states and 184 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:54:44,095 INFO L93 Difference]: Finished difference Result 260 states and 273 transitions. [2021-11-06 10:54:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 10:54:44,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 10:54:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:54:44,096 INFO L225 Difference]: With dead ends: 260 [2021-11-06 10:54:44,096 INFO L226 Difference]: Without dead ends: 219 [2021-11-06 10:54:44,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-06 10:54:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-06 10:54:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2021-11-06 10:54:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 215 states have (on average 1.0511627906976744) internal successors, (226), 216 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 226 transitions. [2021-11-06 10:54:44,113 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 226 transitions. Word has length 87 [2021-11-06 10:54:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:54:44,113 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 226 transitions. [2021-11-06 10:54:44,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 226 transitions. [2021-11-06 10:54:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 10:54:44,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:54:44,114 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:54:44,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-06 10:54:44,114 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:54:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:54:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash -875426521, now seen corresponding path program 1 times [2021-11-06 10:54:44,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:54:44,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234500078] [2021-11-06 10:54:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:44,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:54:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 10:54:44,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:54:44,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234500078] [2021-11-06 10:54:44,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234500078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:54:44,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:54:44,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 10:54:44,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247902427] [2021-11-06 10:54:44,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 10:54:44,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:54:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 10:54:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 10:54:44,849 INFO L87 Difference]: Start difference. First operand 217 states and 226 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:54:50,051 INFO L93 Difference]: Finished difference Result 301 states and 313 transitions. [2021-11-06 10:54:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 10:54:50,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-06 10:54:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:54:50,052 INFO L225 Difference]: With dead ends: 301 [2021-11-06 10:54:50,052 INFO L226 Difference]: Without dead ends: 228 [2021-11-06 10:54:50,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-06 10:54:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-06 10:54:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 204. [2021-11-06 10:54:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.0445544554455446) internal successors, (211), 203 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) [2021-11-06 10:54:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2021-11-06 10:54:50,063 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 89 [2021-11-06 10:54:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:54:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 211 transitions. [2021-11-06 10:54:50,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:54:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 211 transitions. [2021-11-06 10:54:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 10:54:50,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:54:50,064 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:54:50,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 10:54:50,064 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 10:54:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:54:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash -139021834, now seen corresponding path program 1 times [2021-11-06 10:54:50,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:54:50,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037602403] [2021-11-06 10:54:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:50,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:54:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:54:51,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:54:51,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037602403] [2021-11-06 10:54:51,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037602403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 10:54:51,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175696595] [2021-11-06 10:54:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:54:51,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:54:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:54:51,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:54:51,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 10:54:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:54:52,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-06 10:54:52,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:54:52,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 10:54:52,420 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-06 10:54:52,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-06 10:54:53,304 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-06 10:54:53,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-06 10:54:53,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-06 10:54:53,882 INFO L354 Elim1Store]: treesize reduction 256, result has 23.1 percent of original size [2021-11-06 10:54:53,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 87 treesize of output 139 [2021-11-06 10:55:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:55:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:55:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:55:02,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 44 [2021-11-06 10:55:02,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:55:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:55:03,030 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-06 10:55:03,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 51 [2021-11-06 10:55:04,098 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-06 10:55:04,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 56 [2021-11-06 10:55:04,193 INFO L354 Elim1Store]: treesize reduction 89, result has 13.6 percent of original size [2021-11-06 10:55:04,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 108 treesize of output 90 [2021-11-06 10:55:21,484 INFO L354 Elim1Store]: treesize reduction 742, result has 28.3 percent of original size [2021-11-06 10:55:21,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 126 treesize of output 352 Killed by 15