./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:45:13,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:45:13,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:45:13,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:45:13,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:45:13,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:45:13,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:45:13,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:45:13,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:45:13,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:45:13,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:45:13,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:45:13,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:45:13,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:45:13,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:45:13,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:45:13,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:45:13,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:45:13,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:45:13,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:45:13,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:45:13,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:45:13,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:45:13,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:45:13,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:45:13,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:45:13,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:45:13,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:45:13,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:45:13,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:45:13,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:45:13,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:45:13,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:45:13,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:45:13,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:45:13,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:45:13,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:45:13,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:45:13,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:45:13,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:45:13,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:45:13,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:45:13,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:45:13,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:45:13,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:45:13,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:45:13,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:45:13,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:45:13,557 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:45:13,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:45:13,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:45:13,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:45:13,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:45:13,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:45:13,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:45:13,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:45:13,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:45:13,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:45:13,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:45:13,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:45:13,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:45:13,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:45:13,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:45:13,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:45:13,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:45:13,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:45:13,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:45:13,560 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:45:13,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:45:13,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:45:13,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:45:13,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-11-03 22:45:13,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:45:13,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:45:13,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:45:13,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:45:13,770 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:45:13,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-03 22:45:13,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0569734/8b0a2e0203fe445895dbf7beb06334df/FLAGa9d14622b [2021-11-03 22:45:14,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:45:14,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-11-03 22:45:14,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0569734/8b0a2e0203fe445895dbf7beb06334df/FLAGa9d14622b [2021-11-03 22:45:14,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d0569734/8b0a2e0203fe445895dbf7beb06334df [2021-11-03 22:45:14,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:45:14,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:45:14,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:45:14,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:45:14,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:45:14,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:45:14" (1/1) ... [2021-11-03 22:45:14,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d59635f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:14, skipping insertion in model container [2021-11-03 22:45:14,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:45:14" (1/1) ... [2021-11-03 22:45:14,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:45:14,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:45:15,141 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-03 22:45:15,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-03 22:45:15,163 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:45:15,168 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:45:15,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:15,808 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:45:15,809 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:45:15,810 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:45:15,812 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:45:15,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:45:15,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:45:15,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:45:15,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:45:15,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:45:15,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:45:15,910 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:45:15,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:45:16,113 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:45:16,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-11-03 22:45:16,135 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-11-03 22:45:16,136 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:45:16,138 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:45:16,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,163 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,218 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:45:16,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:45:16,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:45:16,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:45:16,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:45:16,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:45:16,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:45:16,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:45:16,222 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:45:16,222 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:45:16,257 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:45:16,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:45:16,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:45:16,496 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:45:16,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16 WrapperNode [2021-11-03 22:45:16,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:45:16,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:45:16,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:45:16,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:45:16,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:45:16,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:45:16,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:45:16,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:45:16,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:45:16,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:45:16,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:45:16,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:45:16,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (1/1) ... [2021-11-03 22:45:16,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:45:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:45:16,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 22:45:16,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 22:45:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 22:45:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:45:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:45:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:45:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:45:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:45:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:45:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:45:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:45:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:45:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:45:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:45:21,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:45:21,451 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-11-03 22:45:21,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:45:21 BoogieIcfgContainer [2021-11-03 22:45:21,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:45:21,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:45:21,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:45:21,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:45:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:45:14" (1/3) ... [2021-11-03 22:45:21,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269ebc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:45:21, skipping insertion in model container [2021-11-03 22:45:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:45:16" (2/3) ... [2021-11-03 22:45:21,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269ebc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:45:21, skipping insertion in model container [2021-11-03 22:45:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:45:21" (3/3) ... [2021-11-03 22:45:21,458 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-11-03 22:45:21,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:45:21,462 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-03 22:45:21,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:45:21,494 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 22:45:21,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-03 22:45:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 22:45:21,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:21,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:21,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:45:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:21,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1810806174, now seen corresponding path program 1 times [2021-11-03 22:45:21,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:21,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532727031] [2021-11-03 22:45:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:21,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:22,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:22,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532727031] [2021-11-03 22:45:22,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532727031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:22,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:22,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:45:22,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974689636] [2021-11-03 22:45:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:22,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:45:22,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:45:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:45:22,060 INFO L87 Difference]: Start difference. First operand has 224 states, 210 states have (on average 1.480952380952381) internal successors, (311), 223 states have internal predecessors, (311), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 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) [2021-11-03 22:45:24,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:25,469 INFO L93 Difference]: Finished difference Result 444 states and 617 transitions. [2021-11-03 22:45:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:45:25,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 [2021-11-03 22:45:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:25,477 INFO L225 Difference]: With dead ends: 444 [2021-11-03 22:45:25,477 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 22:45:25,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:45:25,482 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3009.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3342.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:25,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 285 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 1 Unknown, 0 Unchecked, 3342.31ms Time] [2021-11-03 22:45:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 22:45:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-03 22:45:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3480392156862746) internal successors, (275), 216 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2021-11-03 22:45:25,519 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 53 [2021-11-03 22:45:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:25,520 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2021-11-03 22:45:25,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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) [2021-11-03 22:45:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2021-11-03 22:45:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 22:45:25,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:25,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:25,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:45:25,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:45:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1818889704, now seen corresponding path program 1 times [2021-11-03 22:45:25,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:25,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901495446] [2021-11-03 22:45:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:25,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:25,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:25,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901495446] [2021-11-03 22:45:25,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901495446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:25,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:25,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:45:25,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454506443] [2021-11-03 22:45:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:25,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:45:25,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:45:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:45:25,800 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-03 22:45:27,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:29,625 INFO L93 Difference]: Finished difference Result 413 states and 523 transitions. [2021-11-03 22:45:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:45:29,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 [2021-11-03 22:45:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:29,627 INFO L225 Difference]: With dead ends: 413 [2021-11-03 22:45:29,627 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 22:45:29,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.11ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:45:29,628 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3410.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.95ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3771.69ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:29,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 497 Unknown, 0 Unchecked, 10.95ms Time], IncrementalHoareTripleChecker [5 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 3771.69ms Time] [2021-11-03 22:45:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 22:45:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-03 22:45:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3333333333333333) internal successors, (272), 216 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 272 transitions. [2021-11-03 22:45:29,636 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 272 transitions. Word has length 53 [2021-11-03 22:45:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:29,636 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 272 transitions. [2021-11-03 22:45:29,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-03 22:45:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 272 transitions. [2021-11-03 22:45:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 22:45:29,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:29,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:29,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:45:29,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:45:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1514747006, now seen corresponding path program 1 times [2021-11-03 22:45:29,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:29,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867203875] [2021-11-03 22:45:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:29,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:29,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:29,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867203875] [2021-11-03 22:45:29,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867203875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:29,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:29,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:45:29,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551601640] [2021-11-03 22:45:29,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:29,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:45:29,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:29,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:45:29,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:45:29,937 INFO L87 Difference]: Start difference. First operand 217 states and 272 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:31,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:33,656 INFO L93 Difference]: Finished difference Result 385 states and 482 transitions. [2021-11-03 22:45:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:45:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 22:45:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:33,657 INFO L225 Difference]: With dead ends: 385 [2021-11-03 22:45:33,657 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 22:45:33,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.26ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:45:33,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3375.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.80ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3669.78ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:33,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 469 Unknown, 0 Unchecked, 6.80ms Time], IncrementalHoareTripleChecker [4 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 3669.78ms Time] [2021-11-03 22:45:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 22:45:33,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-03 22:45:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3235294117647058) internal successors, (270), 216 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 270 transitions. [2021-11-03 22:45:33,677 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 270 transitions. Word has length 57 [2021-11-03 22:45:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:33,677 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 270 transitions. [2021-11-03 22:45:33,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 270 transitions. [2021-11-03 22:45:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 22:45:33,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:33,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:33,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:45:33,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:45:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 319412887, now seen corresponding path program 1 times [2021-11-03 22:45:33,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:33,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763490758] [2021-11-03 22:45:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:33,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:34,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:34,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763490758] [2021-11-03 22:45:34,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763490758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:34,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:34,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:45:34,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620598445] [2021-11-03 22:45:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:34,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:45:34,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:45:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:45:34,070 INFO L87 Difference]: Start difference. First operand 217 states and 270 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:36,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:38,014 INFO L93 Difference]: Finished difference Result 326 states and 400 transitions. [2021-11-03 22:45:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:45:38,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-03 22:45:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:38,015 INFO L225 Difference]: With dead ends: 326 [2021-11-03 22:45:38,016 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 22:45:38,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 230.24ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:45:38,017 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 751 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3452.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.04ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3783.09ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:38,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 0 Invalid, 565 Unknown, 0 Unchecked, 11.04ms Time], IncrementalHoareTripleChecker [5 Valid, 559 Invalid, 1 Unknown, 0 Unchecked, 3783.09ms Time] [2021-11-03 22:45:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 22:45:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-03 22:45:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3186274509803921) internal successors, (269), 216 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-03 22:45:38,023 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 63 [2021-11-03 22:45:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:38,023 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-03 22:45:38,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-03 22:45:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 22:45:38,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:38,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:38,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 22:45:38,032 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:45:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 321872050, now seen corresponding path program 1 times [2021-11-03 22:45:38,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:38,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545930883] [2021-11-03 22:45:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:38,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:38,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:38,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545930883] [2021-11-03 22:45:38,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545930883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:38,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:38,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:45:38,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052292737] [2021-11-03 22:45:38,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:38,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:45:38,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:45:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:45:38,383 INFO L87 Difference]: Start difference. First operand 217 states and 269 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:40,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:42,216 INFO L93 Difference]: Finished difference Result 345 states and 424 transitions. [2021-11-03 22:45:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:45:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 22:45:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:42,218 INFO L225 Difference]: With dead ends: 345 [2021-11-03 22:45:42,218 INFO L226 Difference]: Without dead ends: 217 [2021-11-03 22:45:42,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 211.93ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:45:42,219 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 762 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3415.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.40ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3682.14ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:42,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 0 Invalid, 538 Unknown, 0 Unchecked, 10.40ms Time], IncrementalHoareTripleChecker [6 Valid, 531 Invalid, 1 Unknown, 0 Unchecked, 3682.14ms Time] [2021-11-03 22:45:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-03 22:45:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-03 22:45:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.3088235294117647) internal successors, (267), 216 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-03 22:45:42,223 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 65 [2021-11-03 22:45:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:42,224 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-03 22:45:42,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-03 22:45:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 22:45:42,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:42,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:42,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 22:45:42,225 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:45:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1147926727, now seen corresponding path program 1 times [2021-11-03 22:45:42,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:45:42,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016068005] [2021-11-03 22:45:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:42,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:45:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:42,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:45:42,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016068005] [2021-11-03 22:45:42,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016068005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:42,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:42,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:45:42,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141835847] [2021-11-03 22:45:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:42,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:45:42,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:45:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:45:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:45:42,921 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:45:44,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:03,076 INFO L93 Difference]: Finished difference Result 1734 states and 2163 transitions. [2021-11-03 22:46:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-03 22:46:03,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-03 22:46:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:03,083 INFO L225 Difference]: With dead ends: 1734 [2021-11-03 22:46:03,084 INFO L226 Difference]: Without dead ends: 1615 [2021-11-03 22:46:03,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 5008.39ms TimeCoverageRelationStatistics Valid=799, Invalid=2983, Unknown=0, NotChecked=0, Total=3782 [2021-11-03 22:46:03,086 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2568 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14245.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.19ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15098.47ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:03,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2568 Valid, 0 Invalid, 4830 Unknown, 0 Unchecked, 56.19ms Time], IncrementalHoareTripleChecker [61 Valid, 4768 Invalid, 1 Unknown, 0 Unchecked, 15098.47ms Time] [2021-11-03 22:46:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-03 22:46:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 262. [2021-11-03 22:46:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 249 states have (on average 1.3052208835341366) internal successors, (325), 261 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 325 transitions. [2021-11-03 22:46:03,098 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 325 transitions. Word has length 71 [2021-11-03 22:46:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:03,098 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 325 transitions. [2021-11-03 22:46:03,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 325 transitions. [2021-11-03 22:46:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 22:46:03,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:03,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:03,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 22:46:03,100 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:03,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1396073221, now seen corresponding path program 1 times [2021-11-03 22:46:03,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:03,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408040963] [2021-11-03 22:46:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:03,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:03,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:03,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408040963] [2021-11-03 22:46:03,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408040963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:03,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:03,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:46:03,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631907018] [2021-11-03 22:46:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:03,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:46:03,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:46:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:46:03,294 INFO L87 Difference]: Start difference. First operand 262 states and 325 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:05,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:07,785 INFO L93 Difference]: Finished difference Result 480 states and 597 transitions. [2021-11-03 22:46:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:46:07,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-03 22:46:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:07,789 INFO L225 Difference]: With dead ends: 480 [2021-11-03 22:46:07,789 INFO L226 Difference]: Without dead ends: 302 [2021-11-03 22:46:07,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:46:07,790 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4101.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.23ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4428.14ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:07,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 828 Unknown, 0 Unchecked, 5.23ms Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 4428.14ms Time] [2021-11-03 22:46:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-03 22:46:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 270. [2021-11-03 22:46:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 257 states have (on average 1.2918287937743191) internal successors, (332), 269 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2021-11-03 22:46:07,796 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 71 [2021-11-03 22:46:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:07,797 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2021-11-03 22:46:07,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2021-11-03 22:46:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:46:07,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:07,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:07,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 22:46:07,799 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash 132412342, now seen corresponding path program 1 times [2021-11-03 22:46:07,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:07,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871536333] [2021-11-03 22:46:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:07,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:08,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:08,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871536333] [2021-11-03 22:46:08,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871536333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:08,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:08,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:46:08,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858569000] [2021-11-03 22:46:08,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:08,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:46:08,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:46:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:46:08,144 INFO L87 Difference]: Start difference. First operand 270 states and 332 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) [2021-11-03 22:46:10,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:14,649 INFO L93 Difference]: Finished difference Result 782 states and 944 transitions. [2021-11-03 22:46:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:46:14,650 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 [2021-11-03 22:46:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:14,652 INFO L225 Difference]: With dead ends: 782 [2021-11-03 22:46:14,652 INFO L226 Difference]: Without dead ends: 659 [2021-11-03 22:46:14,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 325.22ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:46:14,653 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 894 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5813.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.00ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6195.57ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:14,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 0 Invalid, 1448 Unknown, 0 Unchecked, 13.00ms Time], IncrementalHoareTripleChecker [10 Valid, 1437 Invalid, 1 Unknown, 0 Unchecked, 6195.57ms Time] [2021-11-03 22:46:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-03 22:46:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 299. [2021-11-03 22:46:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 286 states have (on average 1.2867132867132867) internal successors, (368), 298 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 368 transitions. [2021-11-03 22:46:14,660 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 368 transitions. Word has length 72 [2021-11-03 22:46:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:14,660 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 368 transitions. [2021-11-03 22:46:14,661 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) [2021-11-03 22:46:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 368 transitions. [2021-11-03 22:46:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:46:14,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:14,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:14,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 22:46:14,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash -547646028, now seen corresponding path program 1 times [2021-11-03 22:46:14,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:14,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439964980] [2021-11-03 22:46:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:14,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:15,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:15,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439964980] [2021-11-03 22:46:15,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439964980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:15,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:15,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:46:15,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320336033] [2021-11-03 22:46:15,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:15,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:46:15,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:15,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:46:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:46:15,120 INFO L87 Difference]: Start difference. First operand 299 states and 368 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) [2021-11-03 22:46:17,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:20,816 INFO L93 Difference]: Finished difference Result 466 states and 565 transitions. [2021-11-03 22:46:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:46:20,817 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 [2021-11-03 22:46:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:20,818 INFO L225 Difference]: With dead ends: 466 [2021-11-03 22:46:20,818 INFO L226 Difference]: Without dead ends: 462 [2021-11-03 22:46:20,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 158.69ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:46:20,819 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 278 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5302.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.22ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5568.59ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:20,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 0 Invalid, 1298 Unknown, 0 Unchecked, 9.22ms Time], IncrementalHoareTripleChecker [19 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 5568.59ms Time] [2021-11-03 22:46:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-03 22:46:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 307. [2021-11-03 22:46:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 294 states have (on average 1.2789115646258504) internal successors, (376), 306 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 376 transitions. [2021-11-03 22:46:20,830 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 376 transitions. Word has length 72 [2021-11-03 22:46:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:20,830 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 376 transitions. [2021-11-03 22:46:20,830 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) [2021-11-03 22:46:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 376 transitions. [2021-11-03 22:46:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:46:20,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:20,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:20,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 22:46:20,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash 838129070, now seen corresponding path program 1 times [2021-11-03 22:46:20,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:20,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130277736] [2021-11-03 22:46:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:20,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:21,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:21,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130277736] [2021-11-03 22:46:21,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130277736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:21,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:21,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:46:21,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773434819] [2021-11-03 22:46:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:21,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:46:21,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:46:21,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:46:21,234 INFO L87 Difference]: Start difference. First operand 307 states and 376 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2021-11-03 22:46:23,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:27,013 INFO L93 Difference]: Finished difference Result 548 states and 661 transitions. [2021-11-03 22:46:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:46:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 [2021-11-03 22:46:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:27,015 INFO L225 Difference]: With dead ends: 548 [2021-11-03 22:46:27,015 INFO L226 Difference]: Without dead ends: 424 [2021-11-03 22:46:27,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 341.12ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:46:27,016 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 638 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5225.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.32ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5520.75ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:27,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 0 Invalid, 1227 Unknown, 0 Unchecked, 10.32ms Time], IncrementalHoareTripleChecker [19 Valid, 1207 Invalid, 1 Unknown, 0 Unchecked, 5520.75ms Time] [2021-11-03 22:46:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-03 22:46:27,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 310. [2021-11-03 22:46:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 297 states have (on average 1.2760942760942762) internal successors, (379), 309 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 379 transitions. [2021-11-03 22:46:27,024 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 379 transitions. Word has length 76 [2021-11-03 22:46:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:27,025 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 379 transitions. [2021-11-03 22:46:27,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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) [2021-11-03 22:46:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 379 transitions. [2021-11-03 22:46:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:46:27,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:27,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:27,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 22:46:27,026 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1215429817, now seen corresponding path program 1 times [2021-11-03 22:46:27,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:27,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807851067] [2021-11-03 22:46:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:27,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:27,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:27,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807851067] [2021-11-03 22:46:27,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807851067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:27,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:27,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:46:27,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705555415] [2021-11-03 22:46:27,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:27,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:46:27,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:46:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:46:27,738 INFO L87 Difference]: Start difference. First operand 310 states and 379 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:29,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:35,708 INFO L93 Difference]: Finished difference Result 800 states and 967 transitions. [2021-11-03 22:46:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:46:35,709 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 22:46:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:35,711 INFO L225 Difference]: With dead ends: 800 [2021-11-03 22:46:35,711 INFO L226 Difference]: Without dead ends: 634 [2021-11-03 22:46:35,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 986.79ms TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:46:35,712 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1766 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6752.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7158.16ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:35,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 0 Invalid, 1965 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [35 Valid, 1929 Invalid, 1 Unknown, 0 Unchecked, 7158.16ms Time] [2021-11-03 22:46:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-03 22:46:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 408. [2021-11-03 22:46:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.2759493670886075) internal successors, (504), 407 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 504 transitions. [2021-11-03 22:46:35,722 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 504 transitions. Word has length 79 [2021-11-03 22:46:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:35,722 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 504 transitions. [2021-11-03 22:46:35,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 504 transitions. [2021-11-03 22:46:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:46:35,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:35,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:35,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 22:46:35,724 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1304167923, now seen corresponding path program 1 times [2021-11-03 22:46:35,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:35,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063016601] [2021-11-03 22:46:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:35,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:36,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:36,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063016601] [2021-11-03 22:46:36,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063016601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:36,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:36,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:46:36,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128438124] [2021-11-03 22:46:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:36,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:46:36,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:46:36,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:46:36,132 INFO L87 Difference]: Start difference. First operand 408 states and 504 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:38,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:45,409 INFO L93 Difference]: Finished difference Result 1501 states and 1876 transitions. [2021-11-03 22:46:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:46:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:46:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:45,413 INFO L225 Difference]: With dead ends: 1501 [2021-11-03 22:46:45,413 INFO L226 Difference]: Without dead ends: 1257 [2021-11-03 22:46:45,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1149.30ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:46:45,414 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1803 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7561.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.76ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8143.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:45,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 0 Invalid, 2030 Unknown, 0 Unchecked, 18.76ms Time], IncrementalHoareTripleChecker [47 Valid, 1982 Invalid, 1 Unknown, 0 Unchecked, 8143.31ms Time] [2021-11-03 22:46:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-11-03 22:46:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 408. [2021-11-03 22:46:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.270886075949367) internal successors, (502), 407 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 502 transitions. [2021-11-03 22:46:45,428 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 502 transitions. Word has length 82 [2021-11-03 22:46:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:45,428 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 502 transitions. [2021-11-03 22:46:45,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 502 transitions. [2021-11-03 22:46:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:46:45,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:45,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:45,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 22:46:45,429 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1957590975, now seen corresponding path program 1 times [2021-11-03 22:46:45,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:45,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430235138] [2021-11-03 22:46:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:45,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:46,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:46,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430235138] [2021-11-03 22:46:46,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430235138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:46,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:46,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:46:46,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250755128] [2021-11-03 22:46:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:46,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:46:46,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:46:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:46:46,153 INFO L87 Difference]: Start difference. First operand 408 states and 502 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:48,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:52,720 INFO L93 Difference]: Finished difference Result 882 states and 1065 transitions. [2021-11-03 22:46:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:46:52,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 22:46:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:52,722 INFO L225 Difference]: With dead ends: 882 [2021-11-03 22:46:52,722 INFO L226 Difference]: Without dead ends: 633 [2021-11-03 22:46:52,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 637.52ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:46:52,723 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2828 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5739.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.40ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6106.44ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:52,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 0 Invalid, 1337 Unknown, 0 Unchecked, 13.40ms Time], IncrementalHoareTripleChecker [35 Valid, 1301 Invalid, 1 Unknown, 0 Unchecked, 6106.44ms Time] [2021-11-03 22:46:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-03 22:46:52,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 408. [2021-11-03 22:46:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 395 states have (on average 1.2658227848101267) internal successors, (500), 407 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 500 transitions. [2021-11-03 22:46:52,733 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 500 transitions. Word has length 82 [2021-11-03 22:46:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:52,733 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 500 transitions. [2021-11-03 22:46:52,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 500 transitions. [2021-11-03 22:46:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 22:46:52,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:52,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:52,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 22:46:52,735 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:52,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1647086499, now seen corresponding path program 1 times [2021-11-03 22:46:52,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:52,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090123116] [2021-11-03 22:46:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:52,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:53,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:53,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090123116] [2021-11-03 22:46:53,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090123116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:53,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:53,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:46:53,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015183289] [2021-11-03 22:46:53,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:53,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:46:53,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:53,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:46:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:46:53,102 INFO L87 Difference]: Start difference. First operand 408 states and 500 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:55,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:59,004 INFO L93 Difference]: Finished difference Result 644 states and 769 transitions. [2021-11-03 22:46:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:46:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 22:46:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:59,006 INFO L225 Difference]: With dead ends: 644 [2021-11-03 22:46:59,006 INFO L226 Difference]: Without dead ends: 640 [2021-11-03 22:46:59,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 166.56ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:46:59,007 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 251 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5432.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.56ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5777.82ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:59,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 0 Invalid, 1290 Unknown, 0 Unchecked, 7.56ms Time], IncrementalHoareTripleChecker [19 Valid, 1270 Invalid, 1 Unknown, 0 Unchecked, 5777.82ms Time] [2021-11-03 22:46:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-03 22:46:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 420. [2021-11-03 22:46:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 407 states have (on average 1.257985257985258) internal successors, (512), 419 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 512 transitions. [2021-11-03 22:46:59,018 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 512 transitions. Word has length 83 [2021-11-03 22:46:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:59,018 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 512 transitions. [2021-11-03 22:46:59,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:46:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 512 transitions. [2021-11-03 22:46:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 22:46:59,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:59,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:59,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 22:46:59,020 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:46:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1801952335, now seen corresponding path program 1 times [2021-11-03 22:46:59,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:46:59,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746877893] [2021-11-03 22:46:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:59,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:46:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:59,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:46:59,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746877893] [2021-11-03 22:46:59,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746877893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:59,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:59,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:46:59,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527009548] [2021-11-03 22:46:59,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:59,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:46:59,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:46:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:46:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:46:59,811 INFO L87 Difference]: Start difference. First operand 420 states and 512 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:02,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:10,195 INFO L93 Difference]: Finished difference Result 1109 states and 1347 transitions. [2021-11-03 22:47:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:47:10,196 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 22:47:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:10,198 INFO L225 Difference]: With dead ends: 1109 [2021-11-03 22:47:10,198 INFO L226 Difference]: Without dead ends: 936 [2021-11-03 22:47:10,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1073.95ms TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:47:10,199 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2018 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9015.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.40ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9539.34ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:10,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 0 Invalid, 2577 Unknown, 0 Unchecked, 27.40ms Time], IncrementalHoareTripleChecker [59 Valid, 2517 Invalid, 1 Unknown, 0 Unchecked, 9539.34ms Time] [2021-11-03 22:47:10,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-03 22:47:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 576. [2021-11-03 22:47:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 563 states have (on average 1.2682060390763765) internal successors, (714), 575 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 714 transitions. [2021-11-03 22:47:10,216 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 714 transitions. Word has length 83 [2021-11-03 22:47:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:10,216 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 714 transitions. [2021-11-03 22:47:10,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 714 transitions. [2021-11-03 22:47:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 22:47:10,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:10,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:10,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 22:47:10,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:47:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2098648175, now seen corresponding path program 1 times [2021-11-03 22:47:10,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:10,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901006698] [2021-11-03 22:47:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:10,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:10,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:10,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901006698] [2021-11-03 22:47:10,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901006698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:10,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:10,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:47:10,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884233012] [2021-11-03 22:47:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:10,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:47:10,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:47:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:47:10,642 INFO L87 Difference]: Start difference. First operand 576 states and 714 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:12,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:18,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:18,949 INFO L93 Difference]: Finished difference Result 856 states and 1034 transitions. [2021-11-03 22:47:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:47:18,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 22:47:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:18,952 INFO L225 Difference]: With dead ends: 856 [2021-11-03 22:47:18,952 INFO L226 Difference]: Without dead ends: 725 [2021-11-03 22:47:18,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 331.88ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:47:18,953 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 681 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7701.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.83ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8044.51ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:18,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 0 Invalid, 2250 Unknown, 0 Unchecked, 16.83ms Time], IncrementalHoareTripleChecker [17 Valid, 2232 Invalid, 1 Unknown, 0 Unchecked, 8044.51ms Time] [2021-11-03 22:47:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-03 22:47:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 576. [2021-11-03 22:47:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 563 states have (on average 1.266429840142096) internal successors, (713), 575 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 713 transitions. [2021-11-03 22:47:18,973 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 713 transitions. Word has length 83 [2021-11-03 22:47:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:18,973 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 713 transitions. [2021-11-03 22:47:18,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 713 transitions. [2021-11-03 22:47:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 22:47:18,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:18,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:18,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 22:47:18,974 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:47:18,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1516260751, now seen corresponding path program 1 times [2021-11-03 22:47:18,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:18,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415208950] [2021-11-03 22:47:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:18,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:19,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:19,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415208950] [2021-11-03 22:47:19,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415208950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:19,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:19,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:47:19,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275077424] [2021-11-03 22:47:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:19,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:47:19,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:47:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:47:19,560 INFO L87 Difference]: Start difference. First operand 576 states and 713 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:21,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:27,380 INFO L93 Difference]: Finished difference Result 1240 states and 1526 transitions. [2021-11-03 22:47:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:47:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 22:47:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:27,382 INFO L225 Difference]: With dead ends: 1240 [2021-11-03 22:47:27,382 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 22:47:27,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 249.68ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:47:27,383 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 155 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7121.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.02ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7645.54ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:27,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 0 Invalid, 2170 Unknown, 0 Unchecked, 12.02ms Time], IncrementalHoareTripleChecker [22 Valid, 2147 Invalid, 1 Unknown, 0 Unchecked, 7645.54ms Time] [2021-11-03 22:47:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 22:47:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 576. [2021-11-03 22:47:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 563 states have (on average 1.2593250444049733) internal successors, (709), 575 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 709 transitions. [2021-11-03 22:47:27,398 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 709 transitions. Word has length 83 [2021-11-03 22:47:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:27,398 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 709 transitions. [2021-11-03 22:47:27,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 709 transitions. [2021-11-03 22:47:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:47:27,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:27,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:27,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 22:47:27,400 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:47:27,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1029822425, now seen corresponding path program 1 times [2021-11-03 22:47:27,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:27,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197588579] [2021-11-03 22:47:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:27,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:27,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:27,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197588579] [2021-11-03 22:47:27,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197588579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:27,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:27,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:47:27,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614144066] [2021-11-03 22:47:27,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:27,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:47:27,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:47:27,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:47:27,605 INFO L87 Difference]: Start difference. First operand 576 states and 709 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2021-11-03 22:47:29,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:32,514 INFO L93 Difference]: Finished difference Result 1638 states and 2023 transitions. [2021-11-03 22:47:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:47:32,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 22:47:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:32,517 INFO L225 Difference]: With dead ends: 1638 [2021-11-03 22:47:32,518 INFO L226 Difference]: Without dead ends: 1165 [2021-11-03 22:47:32,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 107.39ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:47:32,519 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 531 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4340.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4773.92ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:32,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 0 Invalid, 853 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [20 Valid, 832 Invalid, 1 Unknown, 0 Unchecked, 4773.92ms Time] [2021-11-03 22:47:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-03 22:47:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 656. [2021-11-03 22:47:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 643 states have (on average 1.2612752721617417) internal successors, (811), 655 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 811 transitions. [2021-11-03 22:47:32,536 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 811 transitions. Word has length 87 [2021-11-03 22:47:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:32,536 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 811 transitions. [2021-11-03 22:47:32,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2021-11-03 22:47:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 811 transitions. [2021-11-03 22:47:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:47:32,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:32,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:32,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 22:47:32,538 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:47:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1709880795, now seen corresponding path program 1 times [2021-11-03 22:47:32,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:32,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773114996] [2021-11-03 22:47:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:32,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:33,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:33,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773114996] [2021-11-03 22:47:33,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773114996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:33,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:33,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:47:33,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274653642] [2021-11-03 22:47:33,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:33,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:47:33,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:47:33,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:47:33,102 INFO L87 Difference]: Start difference. First operand 656 states and 811 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-03 22:47:35,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:45,432 INFO L93 Difference]: Finished difference Result 2160 states and 2682 transitions. [2021-11-03 22:47:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 22:47:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 22:47:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:45,437 INFO L225 Difference]: With dead ends: 2160 [2021-11-03 22:47:45,437 INFO L226 Difference]: Without dead ends: 1834 [2021-11-03 22:47:45,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1828.85ms TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:47:45,438 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2461 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9921.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.51ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10633.98ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:45,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2461 Valid, 0 Invalid, 3000 Unknown, 0 Unchecked, 37.51ms Time], IncrementalHoareTripleChecker [89 Valid, 2910 Invalid, 1 Unknown, 0 Unchecked, 10633.98ms Time] [2021-11-03 22:47:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-03 22:47:45,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1035. [2021-11-03 22:47:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1022 states have (on average 1.2661448140900196) internal successors, (1294), 1034 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1294 transitions. [2021-11-03 22:47:45,468 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1294 transitions. Word has length 87 [2021-11-03 22:47:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:45,469 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1294 transitions. [2021-11-03 22:47:45,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-03 22:47:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1294 transitions. [2021-11-03 22:47:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:47:45,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:45,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:45,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 22:47:45,471 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:47:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash 600594920, now seen corresponding path program 1 times [2021-11-03 22:47:45,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:45,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762136776] [2021-11-03 22:47:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:45,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:47:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:47:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:47:46,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:47:46,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762136776] [2021-11-03 22:47:46,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762136776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:47:46,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:47:46,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:47:46,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316444669] [2021-11-03 22:47:46,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:47:46,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:47:46,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:47:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:47:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:47:46,162 INFO L87 Difference]: Start difference. First operand 1035 states and 1294 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-03 22:47:48,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:47:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:47:58,240 INFO L93 Difference]: Finished difference Result 1683 states and 2067 transitions. [2021-11-03 22:47:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 22:47:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 22:47:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:47:58,244 INFO L225 Difference]: With dead ends: 1683 [2021-11-03 22:47:58,244 INFO L226 Difference]: Without dead ends: 1681 [2021-11-03 22:47:58,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2623.07ms TimeCoverageRelationStatistics Valid=352, Invalid=980, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 22:47:58,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2163 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8917.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.77ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9588.78ms IncrementalHoareTripleChecker+Time [2021-11-03 22:47:58,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2163 Valid, 0 Invalid, 2608 Unknown, 0 Unchecked, 40.77ms Time], IncrementalHoareTripleChecker [61 Valid, 2546 Invalid, 1 Unknown, 0 Unchecked, 9588.78ms Time] [2021-11-03 22:47:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2021-11-03 22:47:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1062. [2021-11-03 22:47:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1049 states have (on average 1.2669208770257387) internal successors, (1329), 1061 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:47:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1329 transitions. [2021-11-03 22:47:58,275 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1329 transitions. Word has length 87 [2021-11-03 22:47:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:47:58,275 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1329 transitions. [2021-11-03 22:47:58,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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) [2021-11-03 22:47:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1329 transitions. [2021-11-03 22:47:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:47:58,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:47:58,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:47:58,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 22:47:58,277 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:47:58,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:47:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1451715357, now seen corresponding path program 1 times [2021-11-03 22:47:58,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:47:58,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109634732] [2021-11-03 22:47:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:47:58,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:01,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:01,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109634732] [2021-11-03 22:48:01,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109634732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:01,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:01,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:48:01,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209523172] [2021-11-03 22:48:01,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:01,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:48:01,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:48:01,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:48:01,636 INFO L87 Difference]: Start difference. First operand 1062 states and 1329 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:04,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:09,455 INFO L93 Difference]: Finished difference Result 2766 states and 3480 transitions. [2021-11-03 22:48:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:48:09,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-03 22:48:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:09,460 INFO L225 Difference]: With dead ends: 2766 [2021-11-03 22:48:09,460 INFO L226 Difference]: Without dead ends: 1890 [2021-11-03 22:48:09,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 763.77ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:48:09,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1611 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6628.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.94ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7179.05ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:09,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1611 Valid, 0 Invalid, 1587 Unknown, 0 Unchecked, 14.94ms Time], IncrementalHoareTripleChecker [27 Valid, 1559 Invalid, 1 Unknown, 0 Unchecked, 7179.05ms Time] [2021-11-03 22:48:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-11-03 22:48:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1634. [2021-11-03 22:48:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1621 states have (on average 1.2732880937692783) internal successors, (2064), 1633 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2064 transitions. [2021-11-03 22:48:09,508 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2064 transitions. Word has length 87 [2021-11-03 22:48:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:09,508 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 2064 transitions. [2021-11-03 22:48:09,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2064 transitions. [2021-11-03 22:48:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:48:09,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:09,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:09,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 22:48:09,511 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:48:09,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:09,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1434920090, now seen corresponding path program 1 times [2021-11-03 22:48:09,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:09,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240754649] [2021-11-03 22:48:09,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:09,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:09,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:09,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240754649] [2021-11-03 22:48:09,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240754649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:09,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:09,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:48:09,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670654908] [2021-11-03 22:48:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:09,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:48:09,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:48:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:48:09,671 INFO L87 Difference]: Start difference. First operand 1634 states and 2064 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:12,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:15,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:15,123 INFO L93 Difference]: Finished difference Result 2639 states and 3317 transitions. [2021-11-03 22:48:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:48:15,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 22:48:15,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:15,126 INFO L225 Difference]: With dead ends: 2639 [2021-11-03 22:48:15,126 INFO L226 Difference]: Without dead ends: 1157 [2021-11-03 22:48:15,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:48:15,128 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4882.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5362.54ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:15,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 796 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [5 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 5362.54ms Time] [2021-11-03 22:48:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-03 22:48:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1130. [2021-11-03 22:48:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1117 states have (on average 1.2587287376902416) internal successors, (1406), 1129 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1406 transitions. [2021-11-03 22:48:15,162 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1406 transitions. Word has length 88 [2021-11-03 22:48:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:15,162 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1406 transitions. [2021-11-03 22:48:15,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1406 transitions. [2021-11-03 22:48:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:48:15,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:15,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:15,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 22:48:15,164 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:48:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1784221018, now seen corresponding path program 1 times [2021-11-03 22:48:15,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:15,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531760730] [2021-11-03 22:48:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:15,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:15,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:15,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531760730] [2021-11-03 22:48:15,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531760730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:15,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:15,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:48:15,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579916443] [2021-11-03 22:48:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:15,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:48:15,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:48:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:48:15,381 INFO L87 Difference]: Start difference. First operand 1130 states and 1406 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:18,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:21,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:21,382 INFO L93 Difference]: Finished difference Result 2445 states and 3052 transitions. [2021-11-03 22:48:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:48:21,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 22:48:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:21,385 INFO L225 Difference]: With dead ends: 2445 [2021-11-03 22:48:21,385 INFO L226 Difference]: Without dead ends: 1399 [2021-11-03 22:48:21,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 85.25ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:48:21,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 378 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5381.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.84ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5884.93ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:21,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 0 Invalid, 1074 Unknown, 0 Unchecked, 7.84ms Time], IncrementalHoareTripleChecker [20 Valid, 1053 Invalid, 1 Unknown, 0 Unchecked, 5884.93ms Time] [2021-11-03 22:48:21,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2021-11-03 22:48:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1130. [2021-11-03 22:48:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1117 states have (on average 1.2470904207699194) internal successors, (1393), 1129 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1393 transitions. [2021-11-03 22:48:21,424 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1393 transitions. Word has length 88 [2021-11-03 22:48:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:21,424 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1393 transitions. [2021-11-03 22:48:21,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1393 transitions. [2021-11-03 22:48:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:48:21,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:21,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:21,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 22:48:21,426 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:48:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:21,427 INFO L85 PathProgramCache]: Analyzing trace with hash 940215516, now seen corresponding path program 1 times [2021-11-03 22:48:21,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:21,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627826095] [2021-11-03 22:48:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:21,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:22,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:22,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627826095] [2021-11-03 22:48:22,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627826095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:22,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:22,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:48:22,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522872968] [2021-11-03 22:48:22,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:22,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:48:22,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:22,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:48:22,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:48:22,648 INFO L87 Difference]: Start difference. First operand 1130 states and 1393 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:25,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:48:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:48:40,048 INFO L93 Difference]: Finished difference Result 2509 states and 3078 transitions. [2021-11-03 22:48:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:48:40,049 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 22:48:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:48:40,052 INFO L225 Difference]: With dead ends: 2509 [2021-11-03 22:48:40,052 INFO L226 Difference]: Without dead ends: 1531 [2021-11-03 22:48:40,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2454.52ms TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 22:48:40,054 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1810 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14515.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.77ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15437.26ms IncrementalHoareTripleChecker+Time [2021-11-03 22:48:40,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 0 Invalid, 4532 Unknown, 0 Unchecked, 39.77ms Time], IncrementalHoareTripleChecker [87 Valid, 4444 Invalid, 1 Unknown, 0 Unchecked, 15437.26ms Time] [2021-11-03 22:48:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-11-03 22:48:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1067. [2021-11-03 22:48:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1054 states have (on average 1.2144212523719164) internal successors, (1280), 1066 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1280 transitions. [2021-11-03 22:48:40,085 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1280 transitions. Word has length 88 [2021-11-03 22:48:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:48:40,085 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 1280 transitions. [2021-11-03 22:48:40,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1280 transitions. [2021-11-03 22:48:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:48:40,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:48:40,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:48:40,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 22:48:40,087 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:48:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:48:40,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1433851872, now seen corresponding path program 1 times [2021-11-03 22:48:40,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:48:40,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455640751] [2021-11-03 22:48:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:48:40,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:48:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:48:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:48:41,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:48:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455640751] [2021-11-03 22:48:41,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455640751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:48:41,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:48:41,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:48:41,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085637757] [2021-11-03 22:48:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:48:41,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:48:41,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:48:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:48:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:48:41,477 INFO L87 Difference]: Start difference. First operand 1067 states and 1280 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:48:43,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:07,174 INFO L93 Difference]: Finished difference Result 2641 states and 3142 transitions. [2021-11-03 22:49:07,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-03 22:49:07,175 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 22:49:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:07,182 INFO L225 Difference]: With dead ends: 2641 [2021-11-03 22:49:07,182 INFO L226 Difference]: Without dead ends: 2474 [2021-11-03 22:49:07,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 8223.22ms TimeCoverageRelationStatistics Valid=1337, Invalid=5803, Unknown=0, NotChecked=0, Total=7140 [2021-11-03 22:49:07,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4890 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 5877 mSolverCounterSat, 112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16801.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4890 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.49ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17950.99ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:07,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4890 Valid, 0 Invalid, 5990 Unknown, 0 Unchecked, 56.49ms Time], IncrementalHoareTripleChecker [112 Valid, 5877 Invalid, 1 Unknown, 0 Unchecked, 17950.99ms Time] [2021-11-03 22:49:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-03 22:49:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1133. [2021-11-03 22:49:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1120 states have (on average 1.2116071428571429) internal successors, (1357), 1132 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1357 transitions. [2021-11-03 22:49:07,225 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1357 transitions. Word has length 88 [2021-11-03 22:49:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:07,225 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1357 transitions. [2021-11-03 22:49:07,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1357 transitions. [2021-11-03 22:49:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 22:49:07,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:07,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:07,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 22:49:07,228 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:49:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash -479508940, now seen corresponding path program 1 times [2021-11-03 22:49:07,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:07,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222619319] [2021-11-03 22:49:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:07,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:07,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:07,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222619319] [2021-11-03 22:49:07,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222619319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:07,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:07,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:49:07,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053256098] [2021-11-03 22:49:07,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:49:07,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:49:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:49:07,830 INFO L87 Difference]: Start difference. First operand 1133 states and 1357 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:10,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:21,594 INFO L93 Difference]: Finished difference Result 3396 states and 4110 transitions. [2021-11-03 22:49:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-03 22:49:21,594 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 22:49:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:21,603 INFO L225 Difference]: With dead ends: 3396 [2021-11-03 22:49:21,603 INFO L226 Difference]: Without dead ends: 3210 [2021-11-03 22:49:21,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 3382.87ms TimeCoverageRelationStatistics Valid=539, Invalid=2113, Unknown=0, NotChecked=0, Total=2652 [2021-11-03 22:49:21,605 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2553 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9664.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.92ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10416.72ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:21,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2553 Valid, 0 Invalid, 2625 Unknown, 0 Unchecked, 24.92ms Time], IncrementalHoareTripleChecker [76 Valid, 2548 Invalid, 1 Unknown, 0 Unchecked, 10416.72ms Time] [2021-11-03 22:49:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-11-03 22:49:21,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 1163. [2021-11-03 22:49:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1150 states have (on average 1.2095652173913043) internal successors, (1391), 1162 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1391 transitions. [2021-11-03 22:49:21,657 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1391 transitions. Word has length 90 [2021-11-03 22:49:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:21,658 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1391 transitions. [2021-11-03 22:49:21,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1391 transitions. [2021-11-03 22:49:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 22:49:21,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:21,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:21,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 22:49:21,660 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:49:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1832928425, now seen corresponding path program 1 times [2021-11-03 22:49:21,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:21,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501230765] [2021-11-03 22:49:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:21,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:22,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:22,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501230765] [2021-11-03 22:49:22,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501230765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:22,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:22,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:49:22,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485068144] [2021-11-03 22:49:22,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:22,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:49:22,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:49:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:49:22,153 INFO L87 Difference]: Start difference. First operand 1163 states and 1391 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:24,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:29,663 INFO L93 Difference]: Finished difference Result 2559 states and 3056 transitions. [2021-11-03 22:49:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:49:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 22:49:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:29,667 INFO L225 Difference]: With dead ends: 2559 [2021-11-03 22:49:29,667 INFO L226 Difference]: Without dead ends: 1447 [2021-11-03 22:49:29,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 205.36ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:49:29,669 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6788.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.39ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7318.47ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:29,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 1927 Unknown, 0 Unchecked, 9.39ms Time], IncrementalHoareTripleChecker [22 Valid, 1904 Invalid, 1 Unknown, 0 Unchecked, 7318.47ms Time] [2021-11-03 22:49:29,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2021-11-03 22:49:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1163. [2021-11-03 22:49:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1150 states have (on average 1.1947826086956521) internal successors, (1374), 1162 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1374 transitions. [2021-11-03 22:49:29,702 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1374 transitions. Word has length 91 [2021-11-03 22:49:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:29,702 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1374 transitions. [2021-11-03 22:49:29,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1374 transitions. [2021-11-03 22:49:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 22:49:29,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:29,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:29,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 22:49:29,704 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:49:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash -791746894, now seen corresponding path program 1 times [2021-11-03 22:49:29,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:29,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884531] [2021-11-03 22:49:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:29,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:29,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:29,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884531] [2021-11-03 22:49:29,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:29,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:29,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:49:29,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523176848] [2021-11-03 22:49:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:29,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:49:29,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:49:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:49:29,864 INFO L87 Difference]: Start difference. First operand 1163 states and 1374 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:32,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:34,849 INFO L93 Difference]: Finished difference Result 1828 states and 2155 transitions. [2021-11-03 22:49:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:49:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 22:49:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:34,862 INFO L225 Difference]: With dead ends: 1828 [2021-11-03 22:49:34,862 INFO L226 Difference]: Without dead ends: 698 [2021-11-03 22:49:34,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:49:34,864 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4478.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4910.33ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:34,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 775 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [11 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 4910.33ms Time] [2021-11-03 22:49:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-03 22:49:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 668. [2021-11-03 22:49:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 655 states have (on average 1.1740458015267174) internal successors, (769), 667 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 769 transitions. [2021-11-03 22:49:34,883 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 769 transitions. Word has length 93 [2021-11-03 22:49:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:34,884 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 769 transitions. [2021-11-03 22:49:34,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 769 transitions. [2021-11-03 22:49:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 22:49:34,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:34,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:34,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 22:49:34,887 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:49:34,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1013450858, now seen corresponding path program 1 times [2021-11-03 22:49:34,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:34,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948933391] [2021-11-03 22:49:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:34,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:35,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:35,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948933391] [2021-11-03 22:49:35,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948933391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:35,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:35,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:49:35,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972300995] [2021-11-03 22:49:35,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:35,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:49:35,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:49:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:49:35,316 INFO L87 Difference]: Start difference. First operand 668 states and 769 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:38,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:44,477 INFO L93 Difference]: Finished difference Result 1162 states and 1325 transitions. [2021-11-03 22:49:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:49:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 22:49:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:44,480 INFO L225 Difference]: With dead ends: 1162 [2021-11-03 22:49:44,480 INFO L226 Difference]: Without dead ends: 1027 [2021-11-03 22:49:44,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 674.67ms TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:49:44,481 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 817 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7981.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8598.33ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:44,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 0 Invalid, 2088 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [34 Valid, 2053 Invalid, 1 Unknown, 0 Unchecked, 8598.33ms Time] [2021-11-03 22:49:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-11-03 22:49:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 904. [2021-11-03 22:49:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 891 states have (on average 1.1750841750841752) internal successors, (1047), 903 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1047 transitions. [2021-11-03 22:49:44,506 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1047 transitions. Word has length 93 [2021-11-03 22:49:44,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:44,507 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1047 transitions. [2021-11-03 22:49:44,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1047 transitions. [2021-11-03 22:49:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 22:49:44,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:44,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:44,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 22:49:44,508 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:49:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -95835017, now seen corresponding path program 1 times [2021-11-03 22:49:44,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:44,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539473391] [2021-11-03 22:49:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:44,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:44,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:44,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539473391] [2021-11-03 22:49:44,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539473391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:44,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:44,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:49:44,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810558777] [2021-11-03 22:49:44,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:44,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:49:44,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:49:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:49:44,986 INFO L87 Difference]: Start difference. First operand 904 states and 1047 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:47,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:49:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:49:52,336 INFO L93 Difference]: Finished difference Result 1081 states and 1224 transitions. [2021-11-03 22:49:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:49:52,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 22:49:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:49:52,338 INFO L225 Difference]: With dead ends: 1081 [2021-11-03 22:49:52,338 INFO L226 Difference]: Without dead ends: 1079 [2021-11-03 22:49:52,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 723.96ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:49:52,340 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 965 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6250.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.34ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6713.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:49:52,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 0 Invalid, 1760 Unknown, 0 Unchecked, 13.34ms Time], IncrementalHoareTripleChecker [22 Valid, 1737 Invalid, 1 Unknown, 0 Unchecked, 6713.96ms Time] [2021-11-03 22:49:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-03 22:49:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 904. [2021-11-03 22:49:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 891 states have (on average 1.1739618406285073) internal successors, (1046), 903 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1046 transitions. [2021-11-03 22:49:52,376 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1046 transitions. Word has length 93 [2021-11-03 22:49:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:49:52,376 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1046 transitions. [2021-11-03 22:49:52,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1046 transitions. [2021-11-03 22:49:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 22:49:52,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:49:52,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:49:52,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 22:49:52,378 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:49:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:49:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 755285420, now seen corresponding path program 1 times [2021-11-03 22:49:52,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:49:52,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218348177] [2021-11-03 22:49:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:49:52,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:49:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:49:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:49:54,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:49:54,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218348177] [2021-11-03 22:49:54,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218348177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:49:54,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:49:54,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:49:54,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139391129] [2021-11-03 22:49:54,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:49:54,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:49:54,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:49:54,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:49:54,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:49:54,486 INFO L87 Difference]: Start difference. First operand 904 states and 1046 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:49:56,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:02,242 INFO L93 Difference]: Finished difference Result 1318 states and 1518 transitions. [2021-11-03 22:50:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:50:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-03 22:50:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:02,244 INFO L225 Difference]: With dead ends: 1318 [2021-11-03 22:50:02,244 INFO L226 Difference]: Without dead ends: 928 [2021-11-03 22:50:02,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 622.76ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:50:02,245 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 984 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 2124 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6827.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.76ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7333.90ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:02,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 0 Invalid, 2153 Unknown, 0 Unchecked, 14.76ms Time], IncrementalHoareTripleChecker [28 Valid, 2124 Invalid, 1 Unknown, 0 Unchecked, 7333.90ms Time] [2021-11-03 22:50:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-03 22:50:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 710. [2021-11-03 22:50:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 697 states have (on average 1.1649928263988523) internal successors, (812), 709 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 812 transitions. [2021-11-03 22:50:02,267 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 812 transitions. Word has length 93 [2021-11-03 22:50:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:02,268 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 812 transitions. [2021-11-03 22:50:02,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 812 transitions. [2021-11-03 22:50:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:50:02,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:02,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:02,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 22:50:02,269 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:50:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1390217806, now seen corresponding path program 1 times [2021-11-03 22:50:02,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:02,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435441468] [2021-11-03 22:50:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:02,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:02,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:02,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:02,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435441468] [2021-11-03 22:50:02,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435441468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:02,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:02,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:50:02,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403478472] [2021-11-03 22:50:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:02,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:50:02,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:02,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:50:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:50:02,538 INFO L87 Difference]: Start difference. First operand 710 states and 812 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:05,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:08,685 INFO L93 Difference]: Finished difference Result 1278 states and 1451 transitions. [2021-11-03 22:50:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:50:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:50:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:08,686 INFO L225 Difference]: With dead ends: 1278 [2021-11-03 22:50:08,687 INFO L226 Difference]: Without dead ends: 927 [2021-11-03 22:50:08,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 239.59ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:50:08,688 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 640 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5443.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.65ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5933.05ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:08,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 0 Invalid, 1220 Unknown, 0 Unchecked, 7.65ms Time], IncrementalHoareTripleChecker [7 Valid, 1212 Invalid, 1 Unknown, 0 Unchecked, 5933.05ms Time] [2021-11-03 22:50:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-03 22:50:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 710. [2021-11-03 22:50:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 697 states have (on average 1.1621233859397417) internal successors, (810), 709 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 810 transitions. [2021-11-03 22:50:08,707 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 810 transitions. Word has length 96 [2021-11-03 22:50:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 810 transitions. [2021-11-03 22:50:08,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 810 transitions. [2021-11-03 22:50:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:50:08,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:08,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:08,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 22:50:08,708 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:50:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 571356852, now seen corresponding path program 1 times [2021-11-03 22:50:08,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:08,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450765195] [2021-11-03 22:50:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:08,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:09,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:09,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450765195] [2021-11-03 22:50:09,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450765195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:09,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:09,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:50:09,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055020114] [2021-11-03 22:50:09,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:09,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:50:09,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:50:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:50:09,100 INFO L87 Difference]: Start difference. First operand 710 states and 810 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:11,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:17,984 INFO L93 Difference]: Finished difference Result 1095 states and 1249 transitions. [2021-11-03 22:50:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:50:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:50:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:17,986 INFO L225 Difference]: With dead ends: 1095 [2021-11-03 22:50:17,986 INFO L226 Difference]: Without dead ends: 954 [2021-11-03 22:50:17,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1041.58ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:50:17,987 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 786 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7353.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.47ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7939.77ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:17,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 0 Invalid, 1949 Unknown, 0 Unchecked, 14.47ms Time], IncrementalHoareTripleChecker [34 Valid, 1914 Invalid, 1 Unknown, 0 Unchecked, 7939.77ms Time] [2021-11-03 22:50:17,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-11-03 22:50:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 755. [2021-11-03 22:50:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 742 states have (on average 1.1617250673854447) internal successors, (862), 754 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 862 transitions. [2021-11-03 22:50:18,009 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 862 transitions. Word has length 96 [2021-11-03 22:50:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:18,009 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 862 transitions. [2021-11-03 22:50:18,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 862 transitions. [2021-11-03 22:50:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:50:18,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:18,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:18,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 22:50:18,010 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:50:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -537929023, now seen corresponding path program 1 times [2021-11-03 22:50:18,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:18,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532459265] [2021-11-03 22:50:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:18,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:19,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:19,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532459265] [2021-11-03 22:50:19,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532459265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:19,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:50:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647276656] [2021-11-03 22:50:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:50:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:50:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:50:19,017 INFO L87 Difference]: Start difference. First operand 755 states and 862 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:21,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:28,783 INFO L93 Difference]: Finished difference Result 968 states and 1090 transitions. [2021-11-03 22:50:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 22:50:28,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:50:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:28,785 INFO L225 Difference]: With dead ends: 968 [2021-11-03 22:50:28,785 INFO L226 Difference]: Without dead ends: 966 [2021-11-03 22:50:28,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1841.17ms TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:50:28,786 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1553 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7620.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.77ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8235.76ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:28,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 0 Invalid, 2043 Unknown, 0 Unchecked, 15.77ms Time], IncrementalHoareTripleChecker [67 Valid, 1975 Invalid, 1 Unknown, 0 Unchecked, 8235.76ms Time] [2021-11-03 22:50:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-03 22:50:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 776. [2021-11-03 22:50:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 763 states have (on average 1.163826998689384) internal successors, (888), 775 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 888 transitions. [2021-11-03 22:50:28,808 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 888 transitions. Word has length 96 [2021-11-03 22:50:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:28,808 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 888 transitions. [2021-11-03 22:50:28,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 888 transitions. [2021-11-03 22:50:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:50:28,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:28,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:28,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 22:50:28,809 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:50:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash 313191414, now seen corresponding path program 1 times [2021-11-03 22:50:28,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:28,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714862739] [2021-11-03 22:50:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:28,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:29,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:29,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714862739] [2021-11-03 22:50:29,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714862739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:29,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:29,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:50:29,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503804333] [2021-11-03 22:50:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:29,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:50:29,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:50:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:50:29,772 INFO L87 Difference]: Start difference. First operand 776 states and 888 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:32,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:50:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:50:43,138 INFO L93 Difference]: Finished difference Result 1530 states and 1737 transitions. [2021-11-03 22:50:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-03 22:50:43,139 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:50:43,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:50:43,140 INFO L225 Difference]: With dead ends: 1530 [2021-11-03 22:50:43,140 INFO L226 Difference]: Without dead ends: 1299 [2021-11-03 22:50:43,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2598.87ms TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 22:50:43,141 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1687 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10386.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.70ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2998 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11109.84ms IncrementalHoareTripleChecker+Time [2021-11-03 22:50:43,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 0 Invalid, 3084 Unknown, 0 Unchecked, 27.70ms Time], IncrementalHoareTripleChecker [85 Valid, 2998 Invalid, 1 Unknown, 0 Unchecked, 11109.84ms Time] [2021-11-03 22:50:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2021-11-03 22:50:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 911. [2021-11-03 22:50:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 898 states have (on average 1.170378619153675) internal successors, (1051), 910 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1051 transitions. [2021-11-03 22:50:43,171 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1051 transitions. Word has length 96 [2021-11-03 22:50:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:50:43,172 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1051 transitions. [2021-11-03 22:50:43,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1051 transitions. [2021-11-03 22:50:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:50:43,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:50:43,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:50:43,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 22:50:43,173 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:50:43,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:50:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1686002742, now seen corresponding path program 1 times [2021-11-03 22:50:43,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:50:43,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2477365] [2021-11-03 22:50:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:50:43,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:50:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:50:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:50:44,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:50:44,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2477365] [2021-11-03 22:50:44,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2477365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:50:44,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:50:44,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:50:44,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082678882] [2021-11-03 22:50:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:50:44,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:50:44,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:50:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:50:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:50:44,488 INFO L87 Difference]: Start difference. First operand 911 states and 1051 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:50:46,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:07,648 INFO L93 Difference]: Finished difference Result 2033 states and 2272 transitions. [2021-11-03 22:51:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-03 22:51:07,648 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:51:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:07,651 INFO L225 Difference]: With dead ends: 2033 [2021-11-03 22:51:07,651 INFO L226 Difference]: Without dead ends: 1818 [2021-11-03 22:51:07,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 7826.45ms TimeCoverageRelationStatistics Valid=1278, Invalid=4124, Unknown=0, NotChecked=0, Total=5402 [2021-11-03 22:51:07,652 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4994 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 142 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14929.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.35ms SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15817.30ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:07,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 0 Invalid, 5243 Unknown, 0 Unchecked, 51.35ms Time], IncrementalHoareTripleChecker [142 Valid, 5100 Invalid, 1 Unknown, 0 Unchecked, 15817.30ms Time] [2021-11-03 22:51:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-11-03 22:51:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1063. [2021-11-03 22:51:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1050 states have (on average 1.1657142857142857) internal successors, (1224), 1062 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1224 transitions. [2021-11-03 22:51:07,685 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1224 transitions. Word has length 96 [2021-11-03 22:51:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:07,685 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 1224 transitions. [2021-11-03 22:51:07,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1224 transitions. [2021-11-03 22:51:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:51:07,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:07,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:07,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 22:51:07,686 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:51:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1551989236, now seen corresponding path program 1 times [2021-11-03 22:51:07,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:07,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224839172] [2021-11-03 22:51:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:07,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:08,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:08,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224839172] [2021-11-03 22:51:08,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224839172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:08,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:08,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:51:08,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923841582] [2021-11-03 22:51:08,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:08,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:51:08,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:51:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:51:08,969 INFO L87 Difference]: Start difference. First operand 1063 states and 1224 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:11,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:19,309 INFO L93 Difference]: Finished difference Result 1476 states and 1675 transitions. [2021-11-03 22:51:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:51:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:51:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:19,311 INFO L225 Difference]: With dead ends: 1476 [2021-11-03 22:51:19,311 INFO L226 Difference]: Without dead ends: 1302 [2021-11-03 22:51:19,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1992.37ms TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2021-11-03 22:51:19,312 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2216 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 68 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8162.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.62ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8810.71ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:19,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 0 Invalid, 2283 Unknown, 0 Unchecked, 21.62ms Time], IncrementalHoareTripleChecker [68 Valid, 2214 Invalid, 1 Unknown, 0 Unchecked, 8810.71ms Time] [2021-11-03 22:51:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-11-03 22:51:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1002. [2021-11-03 22:51:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 989 states have (on average 1.166835187057634) internal successors, (1154), 1001 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1154 transitions. [2021-11-03 22:51:19,346 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1154 transitions. Word has length 96 [2021-11-03 22:51:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:19,346 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1154 transitions. [2021-11-03 22:51:19,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1154 transitions. [2021-11-03 22:51:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 22:51:19,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:19,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:19,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 22:51:19,348 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:51:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2141825290, now seen corresponding path program 1 times [2021-11-03 22:51:19,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:19,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872882087] [2021-11-03 22:51:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:19,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:22,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:22,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872882087] [2021-11-03 22:51:22,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872882087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:22,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:22,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:51:22,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888187502] [2021-11-03 22:51:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:22,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:51:22,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:51:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:51:22,190 INFO L87 Difference]: Start difference. First operand 1002 states and 1154 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:24,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:29,870 INFO L93 Difference]: Finished difference Result 1203 states and 1392 transitions. [2021-11-03 22:51:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:51:29,870 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-03 22:51:29,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:29,871 INFO L225 Difference]: With dead ends: 1203 [2021-11-03 22:51:29,871 INFO L226 Difference]: Without dead ends: 875 [2021-11-03 22:51:29,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2623.81ms TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:51:29,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1450 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5097.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.07ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5681.26ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:29,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 0 Invalid, 1165 Unknown, 0 Unchecked, 12.07ms Time], IncrementalHoareTripleChecker [71 Valid, 1093 Invalid, 1 Unknown, 0 Unchecked, 5681.26ms Time] [2021-11-03 22:51:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-03 22:51:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 512. [2021-11-03 22:51:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 499 states have (on average 1.1462925851703407) internal successors, (572), 511 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 572 transitions. [2021-11-03 22:51:29,890 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 572 transitions. Word has length 96 [2021-11-03 22:51:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:29,890 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 572 transitions. [2021-11-03 22:51:29,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 572 transitions. [2021-11-03 22:51:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 22:51:29,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:29,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:29,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 22:51:29,891 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:51:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash -360208250, now seen corresponding path program 1 times [2021-11-03 22:51:29,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:29,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599567666] [2021-11-03 22:51:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:29,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:30,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:30,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599567666] [2021-11-03 22:51:30,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599567666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:30,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:30,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:51:30,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101826271] [2021-11-03 22:51:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:30,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:51:30,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:51:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:51:30,302 INFO L87 Difference]: Start difference. First operand 512 states and 572 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:32,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:41,262 INFO L93 Difference]: Finished difference Result 1382 states and 1546 transitions. [2021-11-03 22:51:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 22:51:41,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 22:51:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:41,264 INFO L225 Difference]: With dead ends: 1382 [2021-11-03 22:51:41,264 INFO L226 Difference]: Without dead ends: 1277 [2021-11-03 22:51:41,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1203.22ms TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2021-11-03 22:51:41,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1915 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9078.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.29ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9785.60ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:41,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 0 Invalid, 2418 Unknown, 0 Unchecked, 23.29ms Time], IncrementalHoareTripleChecker [32 Valid, 2385 Invalid, 1 Unknown, 0 Unchecked, 9785.60ms Time] [2021-11-03 22:51:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-03 22:51:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 512. [2021-11-03 22:51:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 499 states have (on average 1.1442885771543085) internal successors, (571), 511 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 571 transitions. [2021-11-03 22:51:41,285 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 571 transitions. Word has length 98 [2021-11-03 22:51:41,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:41,285 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 571 transitions. [2021-11-03 22:51:41,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 571 transitions. [2021-11-03 22:51:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 22:51:41,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:41,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:41,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 22:51:41,286 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:51:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1621610358, now seen corresponding path program 1 times [2021-11-03 22:51:41,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:41,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433141459] [2021-11-03 22:51:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:41,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:44,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:44,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433141459] [2021-11-03 22:51:44,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433141459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:44,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:44,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:51:44,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122067983] [2021-11-03 22:51:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:44,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:51:44,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:51:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:51:44,341 INFO L87 Difference]: Start difference. First operand 512 states and 571 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:47,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:51:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:51:55,642 INFO L93 Difference]: Finished difference Result 971 states and 1089 transitions. [2021-11-03 22:51:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:51:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 22:51:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:51:55,644 INFO L225 Difference]: With dead ends: 971 [2021-11-03 22:51:55,644 INFO L226 Difference]: Without dead ends: 805 [2021-11-03 22:51:55,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1294.62ms TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:51:55,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 876 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9661.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.61ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10339.17ms IncrementalHoareTripleChecker+Time [2021-11-03 22:51:55,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 0 Invalid, 2345 Unknown, 0 Unchecked, 23.61ms Time], IncrementalHoareTripleChecker [27 Valid, 2317 Invalid, 1 Unknown, 0 Unchecked, 10339.17ms Time] [2021-11-03 22:51:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-03 22:51:55,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 697. [2021-11-03 22:51:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 684 states have (on average 1.1476608187134503) internal successors, (785), 696 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 785 transitions. [2021-11-03 22:51:55,673 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 785 transitions. Word has length 98 [2021-11-03 22:51:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:51:55,674 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 785 transitions. [2021-11-03 22:51:55,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:51:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 785 transitions. [2021-11-03 22:51:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 22:51:55,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:51:55,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:51:55,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 22:51:55,675 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:51:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:51:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -941551988, now seen corresponding path program 1 times [2021-11-03 22:51:55,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:51:55,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001637835] [2021-11-03 22:51:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:51:55,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:51:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:51:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:51:58,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:51:58,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001637835] [2021-11-03 22:51:58,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001637835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:51:58,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:51:58,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:51:58,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553183210] [2021-11-03 22:51:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:51:58,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:51:58,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:51:58,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:51:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:51:58,574 INFO L87 Difference]: Start difference. First operand 697 states and 785 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:00,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:06,442 INFO L93 Difference]: Finished difference Result 954 states and 1064 transitions. [2021-11-03 22:52:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:52:06,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 22:52:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:06,444 INFO L225 Difference]: With dead ends: 954 [2021-11-03 22:52:06,444 INFO L226 Difference]: Without dead ends: 780 [2021-11-03 22:52:06,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 534.71ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:52:06,445 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 713 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7001.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.27ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7533.47ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:06,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 0 Invalid, 1705 Unknown, 0 Unchecked, 17.27ms Time], IncrementalHoareTripleChecker [29 Valid, 1675 Invalid, 1 Unknown, 0 Unchecked, 7533.47ms Time] [2021-11-03 22:52:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-11-03 22:52:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 689. [2021-11-03 22:52:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 676 states have (on average 1.1405325443786982) internal successors, (771), 688 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 771 transitions. [2021-11-03 22:52:06,482 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 771 transitions. Word has length 98 [2021-11-03 22:52:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:06,482 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 771 transitions. [2021-11-03 22:52:06,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 771 transitions. [2021-11-03 22:52:06,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-03 22:52:06,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:06,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:52:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 22:52:06,483 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:52:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1240016283, now seen corresponding path program 1 times [2021-11-03 22:52:06,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:06,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522614697] [2021-11-03 22:52:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:06,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:08,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:08,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522614697] [2021-11-03 22:52:08,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522614697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:08,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:08,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:52:08,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089623401] [2021-11-03 22:52:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:08,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:52:08,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:52:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:52:08,749 INFO L87 Difference]: Start difference. First operand 689 states and 771 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:11,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:16,635 INFO L93 Difference]: Finished difference Result 1239 states and 1392 transitions. [2021-11-03 22:52:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:52:16,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-03 22:52:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:16,636 INFO L225 Difference]: With dead ends: 1239 [2021-11-03 22:52:16,637 INFO L226 Difference]: Without dead ends: 705 [2021-11-03 22:52:16,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 549.91ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:52:16,637 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 541 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6912.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7525.03ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:16,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 0 Invalid, 1447 Unknown, 0 Unchecked, 14.04ms Time], IncrementalHoareTripleChecker [4 Valid, 1442 Invalid, 1 Unknown, 0 Unchecked, 7525.03ms Time] [2021-11-03 22:52:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-03 22:52:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 693. [2021-11-03 22:52:16,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 680 states have (on average 1.1397058823529411) internal successors, (775), 692 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 775 transitions. [2021-11-03 22:52:16,663 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 775 transitions. Word has length 99 [2021-11-03 22:52:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:16,663 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 775 transitions. [2021-11-03 22:52:16,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 775 transitions. [2021-11-03 22:52:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 22:52:16,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:16,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:52:16,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 22:52:16,664 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:52:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:16,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1013325187, now seen corresponding path program 1 times [2021-11-03 22:52:16,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:16,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902747134] [2021-11-03 22:52:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:16,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:20,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:20,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902747134] [2021-11-03 22:52:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902747134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:20,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:20,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:52:20,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794238861] [2021-11-03 22:52:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:20,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:52:20,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:52:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:52:20,493 INFO L87 Difference]: Start difference. First operand 693 states and 775 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:22,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:40,741 INFO L93 Difference]: Finished difference Result 1301 states and 1461 transitions. [2021-11-03 22:52:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-03 22:52:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-03 22:52:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:40,743 INFO L225 Difference]: With dead ends: 1301 [2021-11-03 22:52:40,743 INFO L226 Difference]: Without dead ends: 1297 [2021-11-03 22:52:40,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 5295.31ms TimeCoverageRelationStatistics Valid=631, Invalid=2561, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 22:52:40,745 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1766 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14919.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.95ms SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15781.93ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:40,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 0 Invalid, 5340 Unknown, 0 Unchecked, 43.95ms Time], IncrementalHoareTripleChecker [225 Valid, 5114 Invalid, 1 Unknown, 0 Unchecked, 15781.93ms Time] [2021-11-03 22:52:40,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-03 22:52:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 845. [2021-11-03 22:52:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 832 states have (on average 1.1370192307692308) internal successors, (946), 844 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 946 transitions. [2021-11-03 22:52:40,780 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 946 transitions. Word has length 100 [2021-11-03 22:52:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:40,780 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 946 transitions. [2021-11-03 22:52:40,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 946 transitions. [2021-11-03 22:52:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 22:52:40,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:40,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:52:40,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 22:52:40,781 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:52:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1685644114, now seen corresponding path program 1 times [2021-11-03 22:52:40,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:40,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112499098] [2021-11-03 22:52:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:40,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:41,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:41,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112499098] [2021-11-03 22:52:41,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112499098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:41,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:41,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:52:41,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453522819] [2021-11-03 22:52:41,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:41,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:52:41,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:41,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:52:41,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:52:41,108 INFO L87 Difference]: Start difference. First operand 845 states and 946 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:43,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:48,843 INFO L93 Difference]: Finished difference Result 1153 states and 1269 transitions. [2021-11-03 22:52:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:52:48,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-03 22:52:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:48,845 INFO L225 Difference]: With dead ends: 1153 [2021-11-03 22:52:48,845 INFO L226 Difference]: Without dead ends: 943 [2021-11-03 22:52:48,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 474.72ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:52:48,846 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 861 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6777.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.41ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7318.57ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:48,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 0 Invalid, 1678 Unknown, 0 Unchecked, 11.41ms Time], IncrementalHoareTripleChecker [31 Valid, 1646 Invalid, 1 Unknown, 0 Unchecked, 7318.57ms Time] [2021-11-03 22:52:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-11-03 22:52:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 834. [2021-11-03 22:52:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 821 states have (on average 1.1315468940316686) internal successors, (929), 833 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 929 transitions. [2021-11-03 22:52:48,880 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 929 transitions. Word has length 101 [2021-11-03 22:52:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:48,880 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 929 transitions. [2021-11-03 22:52:48,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 929 transitions. [2021-11-03 22:52:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 22:52:48,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:48,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:52:48,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 22:52:48,881 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:52:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1714104196, now seen corresponding path program 1 times [2021-11-03 22:52:48,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:48,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703999456] [2021-11-03 22:52:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:48,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:52:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:52:49,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:52:49,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:52:49,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703999456] [2021-11-03 22:52:49,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703999456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:52:49,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:52:49,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:52:49,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116646996] [2021-11-03 22:52:49,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:52:49,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:52:49,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:52:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:52:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:52:49,268 INFO L87 Difference]: Start difference. First operand 834 states and 929 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:51,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:52:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:52:58,077 INFO L93 Difference]: Finished difference Result 2374 states and 2682 transitions. [2021-11-03 22:52:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 22:52:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-03 22:52:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:52:58,080 INFO L225 Difference]: With dead ends: 2374 [2021-11-03 22:52:58,080 INFO L226 Difference]: Without dead ends: 2199 [2021-11-03 22:52:58,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 953.94ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:52:58,081 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1387 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7257.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.21ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7829.51ms IncrementalHoareTripleChecker+Time [2021-11-03 22:52:58,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 0 Invalid, 1859 Unknown, 0 Unchecked, 17.21ms Time], IncrementalHoareTripleChecker [35 Valid, 1823 Invalid, 1 Unknown, 0 Unchecked, 7829.51ms Time] [2021-11-03 22:52:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-03 22:52:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 856. [2021-11-03 22:52:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 843 states have (on average 1.1281138790035588) internal successors, (951), 855 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 951 transitions. [2021-11-03 22:52:58,123 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 951 transitions. Word has length 101 [2021-11-03 22:52:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:52:58,123 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 951 transitions. [2021-11-03 22:52:58,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:52:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 951 transitions. [2021-11-03 22:52:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 22:52:58,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:52:58,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:52:58,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 22:52:58,125 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:52:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:52:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1736857598, now seen corresponding path program 1 times [2021-11-03 22:52:58,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:52:58,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228418674] [2021-11-03 22:52:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:52:58,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:01,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:01,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228418674] [2021-11-03 22:53:01,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228418674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:01,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:01,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:53:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113661233] [2021-11-03 22:53:01,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:01,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:53:01,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:53:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:53:01,809 INFO L87 Difference]: Start difference. First operand 856 states and 951 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:03,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:07,798 INFO L93 Difference]: Finished difference Result 988 states and 1099 transitions. [2021-11-03 22:53:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:53:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-03 22:53:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:07,800 INFO L225 Difference]: With dead ends: 988 [2021-11-03 22:53:07,800 INFO L226 Difference]: Without dead ends: 862 [2021-11-03 22:53:07,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 959.25ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:53:07,801 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 826 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4881.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.57ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5365.38ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:07,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 9.57ms Time], IncrementalHoareTripleChecker [17 Valid, 1164 Invalid, 1 Unknown, 0 Unchecked, 5365.38ms Time] [2021-11-03 22:53:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-03 22:53:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 856. [2021-11-03 22:53:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 843 states have (on average 1.1257413997627521) internal successors, (949), 855 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 949 transitions. [2021-11-03 22:53:07,837 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 949 transitions. Word has length 101 [2021-11-03 22:53:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:07,837 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 949 transitions. [2021-11-03 22:53:07,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 949 transitions. [2021-11-03 22:53:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 22:53:07,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:07,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:07,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 22:53:07,839 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:53:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1878051328, now seen corresponding path program 1 times [2021-11-03 22:53:07,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:07,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179868864] [2021-11-03 22:53:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:07,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:11,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:11,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179868864] [2021-11-03 22:53:11,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179868864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:11,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:11,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:53:11,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317671114] [2021-11-03 22:53:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:11,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:53:11,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:53:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:53:11,596 INFO L87 Difference]: Start difference. First operand 856 states and 949 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:14,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:17,461 INFO L93 Difference]: Finished difference Result 982 states and 1091 transitions. [2021-11-03 22:53:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:53:17,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-03 22:53:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:17,463 INFO L225 Difference]: With dead ends: 982 [2021-11-03 22:53:17,463 INFO L226 Difference]: Without dead ends: 852 [2021-11-03 22:53:17,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 527.01ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:53:17,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 534 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5065.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.70ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5543.13ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:17,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 0 Invalid, 930 Unknown, 0 Unchecked, 6.70ms Time], IncrementalHoareTripleChecker [15 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 5543.13ms Time] [2021-11-03 22:53:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-03 22:53:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2021-11-03 22:53:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 839 states have (on average 1.1239570917759236) internal successors, (943), 851 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 943 transitions. [2021-11-03 22:53:17,500 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 943 transitions. Word has length 101 [2021-11-03 22:53:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:17,500 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 943 transitions. [2021-11-03 22:53:17,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 943 transitions. [2021-11-03 22:53:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 22:53:17,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:17,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:17,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-03 22:53:17,501 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:53:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1897049402, now seen corresponding path program 1 times [2021-11-03 22:53:17,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:17,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094094475] [2021-11-03 22:53:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:17,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:20,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:20,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094094475] [2021-11-03 22:53:20,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094094475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:20,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:20,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:53:20,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358925647] [2021-11-03 22:53:20,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:20,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:53:20,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:20,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:53:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:53:20,431 INFO L87 Difference]: Start difference. First operand 852 states and 943 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:23,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:32,033 INFO L93 Difference]: Finished difference Result 1294 states and 1414 transitions. [2021-11-03 22:53:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:53:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-03 22:53:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:32,036 INFO L225 Difference]: With dead ends: 1294 [2021-11-03 22:53:32,036 INFO L226 Difference]: Without dead ends: 1119 [2021-11-03 22:53:32,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1616.17ms TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:53:32,037 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1224 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9628.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.06ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10304.00ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:32,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 0 Invalid, 2778 Unknown, 0 Unchecked, 24.06ms Time], IncrementalHoareTripleChecker [32 Valid, 2745 Invalid, 1 Unknown, 0 Unchecked, 10304.00ms Time] [2021-11-03 22:53:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-03 22:53:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 852. [2021-11-03 22:53:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 839 states have (on average 1.1191895113230035) internal successors, (939), 851 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 939 transitions. [2021-11-03 22:53:32,076 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 939 transitions. Word has length 102 [2021-11-03 22:53:32,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:32,077 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 939 transitions. [2021-11-03 22:53:32,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 939 transitions. [2021-11-03 22:53:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 22:53:32,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:32,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-03 22:53:32,078 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:53:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1314375689, now seen corresponding path program 1 times [2021-11-03 22:53:32,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:32,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133297310] [2021-11-03 22:53:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:32,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:53:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:53:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:53:35,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:53:35,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133297310] [2021-11-03 22:53:35,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133297310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:53:35,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:53:35,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:53:35,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729902842] [2021-11-03 22:53:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:53:35,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:53:35,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:53:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:53:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:53:35,400 INFO L87 Difference]: Start difference. First operand 852 states and 939 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:37,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:53:59,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:53:59,902 INFO L93 Difference]: Finished difference Result 1586 states and 1734 transitions. [2021-11-03 22:53:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-03 22:53:59,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-03 22:53:59,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:53:59,904 INFO L225 Difference]: With dead ends: 1586 [2021-11-03 22:53:59,904 INFO L226 Difference]: Without dead ends: 1582 [2021-11-03 22:53:59,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 8717.23ms TimeCoverageRelationStatistics Valid=691, Invalid=2171, Unknown=0, NotChecked=0, Total=2862 [2021-11-03 22:53:59,905 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2896 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 5650 mSolverCounterSat, 208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15391.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.60ms SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16390.56ms IncrementalHoareTripleChecker+Time [2021-11-03 22:53:59,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 0 Invalid, 5859 Unknown, 0 Unchecked, 49.60ms Time], IncrementalHoareTripleChecker [208 Valid, 5650 Invalid, 1 Unknown, 0 Unchecked, 16390.56ms Time] [2021-11-03 22:53:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2021-11-03 22:53:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1045. [2021-11-03 22:53:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1032 states have (on average 1.124031007751938) internal successors, (1160), 1044 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1160 transitions. [2021-11-03 22:53:59,954 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1160 transitions. Word has length 103 [2021-11-03 22:53:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:53:59,954 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1160 transitions. [2021-11-03 22:53:59,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:53:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1160 transitions. [2021-11-03 22:53:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 22:53:59,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:53:59,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:53:59,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-03 22:53:59,956 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:53:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:53:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1093270472, now seen corresponding path program 1 times [2021-11-03 22:53:59,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:53:59,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352114667] [2021-11-03 22:53:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:53:59,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:00,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:00,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352114667] [2021-11-03 22:54:00,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352114667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:00,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:00,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:54:00,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303965196] [2021-11-03 22:54:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:00,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:54:00,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:54:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:54:00,188 INFO L87 Difference]: Start difference. First operand 1045 states and 1160 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:02,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:06,212 INFO L93 Difference]: Finished difference Result 1785 states and 1993 transitions. [2021-11-03 22:54:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:54:06,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 22:54:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:06,215 INFO L225 Difference]: With dead ends: 1785 [2021-11-03 22:54:06,215 INFO L226 Difference]: Without dead ends: 1504 [2021-11-03 22:54:06,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 141.92ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:54:06,216 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5344.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5819.85ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:06,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 1198 Unknown, 0 Unchecked, 6.36ms Time], IncrementalHoareTripleChecker [3 Valid, 1194 Invalid, 1 Unknown, 0 Unchecked, 5819.85ms Time] [2021-11-03 22:54:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-11-03 22:54:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1313. [2021-11-03 22:54:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1300 states have (on average 1.1123076923076922) internal successors, (1446), 1312 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1446 transitions. [2021-11-03 22:54:06,300 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1446 transitions. Word has length 104 [2021-11-03 22:54:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:06,301 INFO L470 AbstractCegarLoop]: Abstraction has 1313 states and 1446 transitions. [2021-11-03 22:54:06,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1446 transitions. [2021-11-03 22:54:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 22:54:06,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:06,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:06,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-03 22:54:06,303 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:54:06,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1690592961, now seen corresponding path program 1 times [2021-11-03 22:54:06,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:06,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955438170] [2021-11-03 22:54:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:06,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:06,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:06,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955438170] [2021-11-03 22:54:06,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955438170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:06,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:06,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 22:54:06,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406170835] [2021-11-03 22:54:06,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:06,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:54:06,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:54:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:54:06,915 INFO L87 Difference]: Start difference. First operand 1313 states and 1446 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:08,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:17,184 INFO L93 Difference]: Finished difference Result 1858 states and 2051 transitions. [2021-11-03 22:54:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:54:17,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-03 22:54:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:17,186 INFO L225 Difference]: With dead ends: 1858 [2021-11-03 22:54:17,186 INFO L226 Difference]: Without dead ends: 1854 [2021-11-03 22:54:17,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 917.44ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:54:17,187 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 718 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 94 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8876.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.04ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9457.11ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:17,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 0 Invalid, 2911 Unknown, 0 Unchecked, 21.04ms Time], IncrementalHoareTripleChecker [94 Valid, 2816 Invalid, 1 Unknown, 0 Unchecked, 9457.11ms Time] [2021-11-03 22:54:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-11-03 22:54:17,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1295. [2021-11-03 22:54:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1282 states have (on average 1.109204368174727) internal successors, (1422), 1294 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1422 transitions. [2021-11-03 22:54:17,259 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1422 transitions. Word has length 104 [2021-11-03 22:54:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:17,260 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 1422 transitions. [2021-11-03 22:54:17,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1422 transitions. [2021-11-03 22:54:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 22:54:17,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:17,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:17,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-03 22:54:17,261 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:54:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1667458833, now seen corresponding path program 1 times [2021-11-03 22:54:17,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:17,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032658740] [2021-11-03 22:54:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:17,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:17,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:17,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032658740] [2021-11-03 22:54:17,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032658740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:17,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:54:17,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745760070] [2021-11-03 22:54:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:17,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:54:17,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:54:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:54:17,655 INFO L87 Difference]: Start difference. First operand 1295 states and 1422 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:20,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:29,602 INFO L93 Difference]: Finished difference Result 1954 states and 2129 transitions. [2021-11-03 22:54:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:54:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-03 22:54:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:29,604 INFO L225 Difference]: With dead ends: 1954 [2021-11-03 22:54:29,604 INFO L226 Difference]: Without dead ends: 1733 [2021-11-03 22:54:29,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1236.22ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:54:29,605 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 858 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 2993 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9945.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.41ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2993 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10707.16ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:29,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 0 Invalid, 3009 Unknown, 0 Unchecked, 19.41ms Time], IncrementalHoareTripleChecker [15 Valid, 2993 Invalid, 1 Unknown, 0 Unchecked, 10707.16ms Time] [2021-11-03 22:54:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2021-11-03 22:54:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1206. [2021-11-03 22:54:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1193 states have (on average 1.1031014249790445) internal successors, (1316), 1205 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1316 transitions. [2021-11-03 22:54:29,668 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1316 transitions. Word has length 105 [2021-11-03 22:54:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:29,669 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1316 transitions. [2021-11-03 22:54:29,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1316 transitions. [2021-11-03 22:54:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 22:54:29,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:29,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:29,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-03 22:54:29,670 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:54:29,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 195340878, now seen corresponding path program 1 times [2021-11-03 22:54:29,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:29,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245753363] [2021-11-03 22:54:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:29,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:34,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:34,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245753363] [2021-11-03 22:54:34,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245753363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:34,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:34,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:54:34,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606218081] [2021-11-03 22:54:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:34,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:54:34,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:54:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:54:34,115 INFO L87 Difference]: Start difference. First operand 1206 states and 1316 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:36,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:54:48,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:54:48,719 INFO L93 Difference]: Finished difference Result 1466 states and 1584 transitions. [2021-11-03 22:54:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-03 22:54:48,720 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-03 22:54:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:54:48,721 INFO L225 Difference]: With dead ends: 1466 [2021-11-03 22:54:48,721 INFO L226 Difference]: Without dead ends: 1305 [2021-11-03 22:54:48,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3019.38ms TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 22:54:48,722 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1932 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11452.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.66ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12244.21ms IncrementalHoareTripleChecker+Time [2021-11-03 22:54:48,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 0 Invalid, 3884 Unknown, 0 Unchecked, 32.66ms Time], IncrementalHoareTripleChecker [69 Valid, 3814 Invalid, 1 Unknown, 0 Unchecked, 12244.21ms Time] [2021-11-03 22:54:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-11-03 22:54:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1191. [2021-11-03 22:54:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1178 states have (on average 1.099320882852292) internal successors, (1295), 1190 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1295 transitions. [2021-11-03 22:54:48,783 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1295 transitions. Word has length 105 [2021-11-03 22:54:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:54:48,783 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1295 transitions. [2021-11-03 22:54:48,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1295 transitions. [2021-11-03 22:54:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 22:54:48,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:54:48,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:54:48,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-03 22:54:48,784 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:54:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:54:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -251014884, now seen corresponding path program 1 times [2021-11-03 22:54:48,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:54:48,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327827136] [2021-11-03 22:54:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:54:48,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:54:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:54:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:54:49,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:54:49,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327827136] [2021-11-03 22:54:49,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327827136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:54:49,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:54:49,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:54:49,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013976856] [2021-11-03 22:54:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:54:49,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:54:49,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:54:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:54:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:54:49,778 INFO L87 Difference]: Start difference. First operand 1191 states and 1295 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:54:52,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:00,197 INFO L93 Difference]: Finished difference Result 2095 states and 2293 transitions. [2021-11-03 22:55:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:55:00,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-03 22:55:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:00,199 INFO L225 Difference]: With dead ends: 2095 [2021-11-03 22:55:00,199 INFO L226 Difference]: Without dead ends: 1529 [2021-11-03 22:55:00,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1608.64ms TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:55:00,200 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3123 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 161 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8501.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.07ms SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9137.55ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:00,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3123 Valid, 0 Invalid, 2646 Unknown, 0 Unchecked, 23.07ms Time], IncrementalHoareTripleChecker [161 Valid, 2484 Invalid, 1 Unknown, 0 Unchecked, 9137.55ms Time] [2021-11-03 22:55:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-03 22:55:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1349. [2021-11-03 22:55:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1336 states have (on average 1.098802395209581) internal successors, (1468), 1348 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1468 transitions. [2021-11-03 22:55:00,275 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1468 transitions. Word has length 105 [2021-11-03 22:55:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:00,275 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1468 transitions. [2021-11-03 22:55:00,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1468 transitions. [2021-11-03 22:55:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-03 22:55:00,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:00,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:00,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-03 22:55:00,277 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:55:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash -385028390, now seen corresponding path program 1 times [2021-11-03 22:55:00,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:00,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720357312] [2021-11-03 22:55:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:00,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:05,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:05,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720357312] [2021-11-03 22:55:05,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720357312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:05,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:05,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:55:05,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850263424] [2021-11-03 22:55:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:05,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:55:05,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:55:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:55:05,052 INFO L87 Difference]: Start difference. First operand 1349 states and 1468 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:07,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:13,368 INFO L93 Difference]: Finished difference Result 1676 states and 1808 transitions. [2021-11-03 22:55:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:55:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-03 22:55:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:13,369 INFO L225 Difference]: With dead ends: 1676 [2021-11-03 22:55:13,369 INFO L226 Difference]: Without dead ends: 969 [2021-11-03 22:55:13,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1468.78ms TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:55:13,370 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 831 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6807.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.81ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7356.86ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:13,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 0 Invalid, 1930 Unknown, 0 Unchecked, 12.81ms Time], IncrementalHoareTripleChecker [18 Valid, 1911 Invalid, 1 Unknown, 0 Unchecked, 7356.86ms Time] [2021-11-03 22:55:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-03 22:55:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 957. [2021-11-03 22:55:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 946 states have (on average 1.0930232558139534) internal successors, (1034), 956 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1034 transitions. [2021-11-03 22:55:13,420 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1034 transitions. Word has length 105 [2021-11-03 22:55:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:13,420 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1034 transitions. [2021-11-03 22:55:13,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1034 transitions. [2021-11-03 22:55:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:55:13,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:13,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:13,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-03 22:55:13,422 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:55:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:13,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1667609751, now seen corresponding path program 1 times [2021-11-03 22:55:13,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:13,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151651076] [2021-11-03 22:55:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:13,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:13,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:13,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151651076] [2021-11-03 22:55:13,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151651076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:13,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:13,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:55:13,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561608159] [2021-11-03 22:55:13,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:13,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:55:13,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:13,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:55:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:55:13,654 INFO L87 Difference]: Start difference. First operand 957 states and 1034 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:16,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:18,798 INFO L93 Difference]: Finished difference Result 1161 states and 1248 transitions. [2021-11-03 22:55:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:55:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:55:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:18,799 INFO L225 Difference]: With dead ends: 1161 [2021-11-03 22:55:18,799 INFO L226 Difference]: Without dead ends: 1006 [2021-11-03 22:55:18,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 150.24ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:55:18,800 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 506 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4472.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4974.32ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:18,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 0 Invalid, 774 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [12 Valid, 761 Invalid, 1 Unknown, 0 Unchecked, 4974.32ms Time] [2021-11-03 22:55:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-03 22:55:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 925. [2021-11-03 22:55:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 914 states have (on average 1.0787746170678336) internal successors, (986), 924 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 986 transitions. [2021-11-03 22:55:18,851 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 986 transitions. Word has length 108 [2021-11-03 22:55:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:18,852 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 986 transitions. [2021-11-03 22:55:18,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 986 transitions. [2021-11-03 22:55:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 22:55:18,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:18,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:18,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-03 22:55:18,853 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:55:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1150084859, now seen corresponding path program 1 times [2021-11-03 22:55:18,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:18,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603962848] [2021-11-03 22:55:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:18,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:19,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:19,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603962848] [2021-11-03 22:55:19,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603962848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:19,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:19,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:55:19,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746605340] [2021-11-03 22:55:19,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:19,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:55:19,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:55:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:55:19,167 INFO L87 Difference]: Start difference. First operand 925 states and 986 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:21,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:29,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:29,194 INFO L93 Difference]: Finished difference Result 1790 states and 1928 transitions. [2021-11-03 22:55:29,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 22:55:29,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-03 22:55:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:29,195 INFO L225 Difference]: With dead ends: 1790 [2021-11-03 22:55:29,196 INFO L226 Difference]: Without dead ends: 1470 [2021-11-03 22:55:29,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1150.77ms TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-03 22:55:29,196 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 726 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8264.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.03ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8822.25ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:29,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 0 Invalid, 2553 Unknown, 0 Unchecked, 19.03ms Time], IncrementalHoareTripleChecker [16 Valid, 2536 Invalid, 1 Unknown, 0 Unchecked, 8822.25ms Time] [2021-11-03 22:55:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-03 22:55:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 875. [2021-11-03 22:55:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 864 states have (on average 1.0740740740740742) internal successors, (928), 874 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 928 transitions. [2021-11-03 22:55:29,243 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 928 transitions. Word has length 108 [2021-11-03 22:55:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:29,243 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 928 transitions. [2021-11-03 22:55:29,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 928 transitions. [2021-11-03 22:55:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 22:55:29,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:29,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:29,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-03 22:55:29,244 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:55:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:29,245 INFO L85 PathProgramCache]: Analyzing trace with hash 747265759, now seen corresponding path program 1 times [2021-11-03 22:55:29,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:29,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421538730] [2021-11-03 22:55:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:29,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:55:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:55:30,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:55:30,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421538730] [2021-11-03 22:55:30,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421538730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:55:30,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:55:30,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:55:30,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655590095] [2021-11-03 22:55:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:55:30,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:55:30,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:55:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:55:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:55:30,802 INFO L87 Difference]: Start difference. First operand 875 states and 928 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:32,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:55:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:55:59,489 INFO L93 Difference]: Finished difference Result 1652 states and 1748 transitions. [2021-11-03 22:55:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-03 22:55:59,490 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 22:55:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:55:59,491 INFO L225 Difference]: With dead ends: 1652 [2021-11-03 22:55:59,491 INFO L226 Difference]: Without dead ends: 1541 [2021-11-03 22:55:59,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 6254.94ms TimeCoverageRelationStatistics Valid=966, Invalid=3324, Unknown=0, NotChecked=0, Total=4290 [2021-11-03 22:55:59,492 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1559 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 7869 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21883.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.85ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 7869 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22992.62ms IncrementalHoareTripleChecker+Time [2021-11-03 22:55:59,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 0 Invalid, 7921 Unknown, 0 Unchecked, 64.85ms Time], IncrementalHoareTripleChecker [51 Valid, 7869 Invalid, 1 Unknown, 0 Unchecked, 22992.62ms Time] [2021-11-03 22:55:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2021-11-03 22:55:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 893. [2021-11-03 22:55:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 882 states have (on average 1.0736961451247165) internal successors, (947), 892 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 947 transitions. [2021-11-03 22:55:59,539 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 947 transitions. Word has length 112 [2021-11-03 22:55:59,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:55:59,539 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 947 transitions. [2021-11-03 22:55:59,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:55:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 947 transitions. [2021-11-03 22:55:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-03 22:55:59,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:55:59,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:55:59,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-03 22:55:59,540 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:55:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:55:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1701205917, now seen corresponding path program 1 times [2021-11-03 22:55:59,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:55:59,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864772145] [2021-11-03 22:55:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:55:59,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:55:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:00,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:00,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864772145] [2021-11-03 22:56:00,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864772145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:00,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:00,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:56:00,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325018600] [2021-11-03 22:56:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:00,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:56:00,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:56:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:56:00,855 INFO L87 Difference]: Start difference. First operand 893 states and 947 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:02,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:09,672 INFO L93 Difference]: Finished difference Result 1040 states and 1100 transitions. [2021-11-03 22:56:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 22:56:09,672 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-03 22:56:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:09,673 INFO L225 Difference]: With dead ends: 1040 [2021-11-03 22:56:09,673 INFO L226 Difference]: Without dead ends: 778 [2021-11-03 22:56:09,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2194.62ms TimeCoverageRelationStatistics Valid=295, Invalid=697, Unknown=0, NotChecked=0, Total=992 [2021-11-03 22:56:09,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1922 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6727.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.68ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7182.33ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:09,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 0 Invalid, 1876 Unknown, 0 Unchecked, 18.68ms Time], IncrementalHoareTripleChecker [67 Valid, 1808 Invalid, 1 Unknown, 0 Unchecked, 7182.33ms Time] [2021-11-03 22:56:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-03 22:56:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 709. [2021-11-03 22:56:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 698 states have (on average 1.0744985673352436) internal successors, (750), 708 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:09,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 750 transitions. [2021-11-03 22:56:09,715 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 750 transitions. Word has length 112 [2021-11-03 22:56:09,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:09,715 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 750 transitions. [2021-11-03 22:56:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 750 transitions. [2021-11-03 22:56:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-03 22:56:09,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:09,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:09,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-03 22:56:09,716 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:56:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1088877202, now seen corresponding path program 1 times [2021-11-03 22:56:09,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:09,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897962876] [2021-11-03 22:56:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:09,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:10,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:10,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897962876] [2021-11-03 22:56:10,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897962876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:10,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:10,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:56:10,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365058122] [2021-11-03 22:56:10,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:10,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:56:10,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:56:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:56:10,171 INFO L87 Difference]: Start difference. First operand 709 states and 750 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:13,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:18,680 INFO L93 Difference]: Finished difference Result 988 states and 1050 transitions. [2021-11-03 22:56:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:56:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-03 22:56:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:18,681 INFO L225 Difference]: With dead ends: 988 [2021-11-03 22:56:18,681 INFO L226 Difference]: Without dead ends: 755 [2021-11-03 22:56:18,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 378.47ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:56:18,682 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7639.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.69ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8250.91ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:18,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 1845 Unknown, 0 Unchecked, 12.69ms Time], IncrementalHoareTripleChecker [10 Valid, 1834 Invalid, 1 Unknown, 0 Unchecked, 8250.91ms Time] [2021-11-03 22:56:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-03 22:56:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 709. [2021-11-03 22:56:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 698 states have (on average 1.0687679083094557) internal successors, (746), 708 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 746 transitions. [2021-11-03 22:56:18,723 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 746 transitions. Word has length 118 [2021-11-03 22:56:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:18,723 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 746 transitions. [2021-11-03 22:56:18,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 746 transitions. [2021-11-03 22:56:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 22:56:18,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:18,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:18,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-03 22:56:18,724 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:56:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2105526243, now seen corresponding path program 1 times [2021-11-03 22:56:18,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:18,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759588057] [2021-11-03 22:56:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:18,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:19,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:19,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759588057] [2021-11-03 22:56:19,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759588057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:19,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:19,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:56:19,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484608999] [2021-11-03 22:56:19,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:19,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:56:19,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:56:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:56:19,006 INFO L87 Difference]: Start difference. First operand 709 states and 746 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:21,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:25,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:25,010 INFO L93 Difference]: Finished difference Result 963 states and 1017 transitions. [2021-11-03 22:56:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:56:25,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 22:56:25,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:25,012 INFO L225 Difference]: With dead ends: 963 [2021-11-03 22:56:25,012 INFO L226 Difference]: Without dead ends: 855 [2021-11-03 22:56:25,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 283.57ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:56:25,012 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 472 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5300.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5732.97ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:25,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 0 Invalid, 1352 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [18 Valid, 1333 Invalid, 1 Unknown, 0 Unchecked, 5732.97ms Time] [2021-11-03 22:56:25,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-03 22:56:25,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 757. [2021-11-03 22:56:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 746 states have (on average 1.064343163538874) internal successors, (794), 756 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 794 transitions. [2021-11-03 22:56:25,052 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 794 transitions. Word has length 124 [2021-11-03 22:56:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:25,052 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 794 transitions. [2021-11-03 22:56:25,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 794 transitions. [2021-11-03 22:56:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 22:56:25,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:25,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:25,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-03 22:56:25,053 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:56:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1292047775, now seen corresponding path program 1 times [2021-11-03 22:56:25,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:25,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254586128] [2021-11-03 22:56:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:25,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:25,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:25,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254586128] [2021-11-03 22:56:25,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254586128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:25,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:25,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 22:56:25,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921927231] [2021-11-03 22:56:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:25,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 22:56:25,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 22:56:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:56:25,955 INFO L87 Difference]: Start difference. First operand 757 states and 794 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:28,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:56:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:56:35,918 INFO L93 Difference]: Finished difference Result 929 states and 971 transitions. [2021-11-03 22:56:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:56:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 22:56:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:56:35,920 INFO L225 Difference]: With dead ends: 929 [2021-11-03 22:56:35,920 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 22:56:35,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1340.12ms TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:56:35,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1705 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 93 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8311.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.57ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8958.20ms IncrementalHoareTripleChecker+Time [2021-11-03 22:56:35,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 0 Invalid, 2283 Unknown, 0 Unchecked, 20.57ms Time], IncrementalHoareTripleChecker [93 Valid, 2189 Invalid, 1 Unknown, 0 Unchecked, 8958.20ms Time] [2021-11-03 22:56:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 22:56:35,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 684. [2021-11-03 22:56:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 673 states have (on average 1.0609212481426449) internal successors, (714), 683 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 714 transitions. [2021-11-03 22:56:35,979 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 714 transitions. Word has length 124 [2021-11-03 22:56:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:56:35,979 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 714 transitions. [2021-11-03 22:56:35,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:35,979 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 714 transitions. [2021-11-03 22:56:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-03 22:56:35,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:56:35,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:56:35,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-03 22:56:35,980 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:56:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:56:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash 149545309, now seen corresponding path program 1 times [2021-11-03 22:56:35,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:56:35,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232620686] [2021-11-03 22:56:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:56:35,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:56:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:56:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:56:43,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:56:43,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232620686] [2021-11-03 22:56:43,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232620686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:56:43,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:56:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-03 22:56:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565875751] [2021-11-03 22:56:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:56:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-03 22:56:43,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:56:43,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-03 22:56:43,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:56:43,100 INFO L87 Difference]: Start difference. First operand 684 states and 714 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:56:45,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:07,548 INFO L93 Difference]: Finished difference Result 853 states and 884 transitions. [2021-11-03 22:57:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-03 22:57:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-03 22:57:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:07,549 INFO L225 Difference]: With dead ends: 853 [2021-11-03 22:57:07,549 INFO L226 Difference]: Without dead ends: 849 [2021-11-03 22:57:07,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 10373.22ms TimeCoverageRelationStatistics Valid=1013, Invalid=3543, Unknown=0, NotChecked=0, Total=4556 [2021-11-03 22:57:07,550 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3327 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 5214 mSolverCounterSat, 435 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14743.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.69ms SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 5214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15675.84ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:07,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 0 Invalid, 5650 Unknown, 0 Unchecked, 43.69ms Time], IncrementalHoareTripleChecker [435 Valid, 5214 Invalid, 1 Unknown, 0 Unchecked, 15675.84ms Time] [2021-11-03 22:57:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-03 22:57:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 666. [2021-11-03 22:57:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 656 states have (on average 1.0564024390243902) internal successors, (693), 665 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 693 transitions. [2021-11-03 22:57:07,586 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 693 transitions. Word has length 124 [2021-11-03 22:57:07,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:07,586 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 693 transitions. [2021-11-03 22:57:07,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:07,587 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 693 transitions. [2021-11-03 22:57:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 22:57:07,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:07,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:07,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-03 22:57:07,588 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:57:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1327158850, now seen corresponding path program 1 times [2021-11-03 22:57:07,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:07,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165259928] [2021-11-03 22:57:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:07,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:12,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:12,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165259928] [2021-11-03 22:57:12,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165259928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:12,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:12,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 22:57:12,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359570950] [2021-11-03 22:57:12,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:12,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 22:57:12,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 22:57:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:57:12,230 INFO L87 Difference]: Start difference. First operand 666 states and 693 transitions. Second operand has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:14,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:22,788 INFO L93 Difference]: Finished difference Result 797 states and 829 transitions. [2021-11-03 22:57:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:57:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-03 22:57:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:22,789 INFO L225 Difference]: With dead ends: 797 [2021-11-03 22:57:22,789 INFO L226 Difference]: Without dead ends: 759 [2021-11-03 22:57:22,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2688.97ms TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2021-11-03 22:57:22,790 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2479 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 120 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8020.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.51ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8647.87ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:22,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 0 Invalid, 2146 Unknown, 0 Unchecked, 21.51ms Time], IncrementalHoareTripleChecker [120 Valid, 2025 Invalid, 1 Unknown, 0 Unchecked, 8647.87ms Time] [2021-11-03 22:57:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-11-03 22:57:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 678. [2021-11-03 22:57:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 668 states have (on average 1.0568862275449102) internal successors, (706), 677 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 706 transitions. [2021-11-03 22:57:22,829 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 706 transitions. Word has length 128 [2021-11-03 22:57:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:22,829 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 706 transitions. [2021-11-03 22:57:22,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 706 transitions. [2021-11-03 22:57:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-03 22:57:22,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:22,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:22,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-03 22:57:22,831 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:57:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2007217220, now seen corresponding path program 1 times [2021-11-03 22:57:22,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:22,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542270159] [2021-11-03 22:57:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:22,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:25,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:25,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542270159] [2021-11-03 22:57:25,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542270159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:25,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:25,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:57:25,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968918966] [2021-11-03 22:57:25,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:25,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:57:25,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:57:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:57:25,995 INFO L87 Difference]: Start difference. First operand 678 states and 706 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:28,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:32,158 INFO L93 Difference]: Finished difference Result 716 states and 745 transitions. [2021-11-03 22:57:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:57:32,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-03 22:57:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:32,159 INFO L225 Difference]: With dead ends: 716 [2021-11-03 22:57:32,159 INFO L226 Difference]: Without dead ends: 676 [2021-11-03 22:57:32,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 955.86ms TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:57:32,159 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 728 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5037.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5551.94ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:32,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 0 Invalid, 963 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [39 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 5551.94ms Time] [2021-11-03 22:57:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-03 22:57:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 605. [2021-11-03 22:57:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 595 states have (on average 1.0588235294117647) internal successors, (630), 604 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 630 transitions. [2021-11-03 22:57:32,195 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 630 transitions. Word has length 128 [2021-11-03 22:57:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:32,196 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 630 transitions. [2021-11-03 22:57:32,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 630 transitions. [2021-11-03 22:57:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 22:57:32,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:32,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-03 22:57:32,197 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:57:32,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:32,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1609008045, now seen corresponding path program 1 times [2021-11-03 22:57:32,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:32,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149343369] [2021-11-03 22:57:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:32,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:32,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:32,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149343369] [2021-11-03 22:57:32,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149343369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:32,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:32,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:57:32,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693820979] [2021-11-03 22:57:32,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:32,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:57:32,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:57:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:57:32,472 INFO L87 Difference]: Start difference. First operand 605 states and 630 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:35,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:39,474 INFO L93 Difference]: Finished difference Result 841 states and 871 transitions. [2021-11-03 22:57:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:57:39,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 22:57:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:39,475 INFO L225 Difference]: With dead ends: 841 [2021-11-03 22:57:39,475 INFO L226 Difference]: Without dead ends: 723 [2021-11-03 22:57:39,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 298.50ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:57:39,476 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 664 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6168.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.64ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6719.75ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:39,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 0 Invalid, 1505 Unknown, 0 Unchecked, 9.64ms Time], IncrementalHoareTripleChecker [9 Valid, 1495 Invalid, 1 Unknown, 0 Unchecked, 6719.75ms Time] [2021-11-03 22:57:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-03 22:57:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 605. [2021-11-03 22:57:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 595 states have (on average 1.0571428571428572) internal successors, (629), 604 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 629 transitions. [2021-11-03 22:57:39,509 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 629 transitions. Word has length 129 [2021-11-03 22:57:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:39,509 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 629 transitions. [2021-11-03 22:57:39,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 629 transitions. [2021-11-03 22:57:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 22:57:39,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:39,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:39,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-03 22:57:39,510 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:57:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1214641259, now seen corresponding path program 1 times [2021-11-03 22:57:39,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:39,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076631801] [2021-11-03 22:57:39,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:39,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:39,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:39,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076631801] [2021-11-03 22:57:39,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076631801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:39,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:39,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:57:39,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479294983] [2021-11-03 22:57:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:39,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:57:39,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:57:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:57:39,884 INFO L87 Difference]: Start difference. First operand 605 states and 629 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:42,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:46,951 INFO L93 Difference]: Finished difference Result 718 states and 742 transitions. [2021-11-03 22:57:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:57:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 22:57:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:46,952 INFO L225 Difference]: With dead ends: 718 [2021-11-03 22:57:46,952 INFO L226 Difference]: Without dead ends: 599 [2021-11-03 22:57:46,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 286.88ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:57:46,953 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 351 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6331.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6843.26ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:46,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 0 Invalid, 1446 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [7 Valid, 1438 Invalid, 1 Unknown, 0 Unchecked, 6843.26ms Time] [2021-11-03 22:57:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-03 22:57:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 560. [2021-11-03 22:57:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 550 states have (on average 1.049090909090909) internal successors, (577), 559 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 577 transitions. [2021-11-03 22:57:46,985 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 577 transitions. Word has length 129 [2021-11-03 22:57:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:46,985 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 577 transitions. [2021-11-03 22:57:46,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 577 transitions. [2021-11-03 22:57:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-03 22:57:46,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:46,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:46,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-03 22:57:46,987 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:57:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1830165039, now seen corresponding path program 1 times [2021-11-03 22:57:46,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:46,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134933739] [2021-11-03 22:57:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:46,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:47,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:47,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134933739] [2021-11-03 22:57:47,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134933739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:47,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:47,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:57:47,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209991309] [2021-11-03 22:57:47,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:47,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:57:47,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:57:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:57:47,640 INFO L87 Difference]: Start difference. First operand 560 states and 577 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:50,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:57:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:57:54,536 INFO L93 Difference]: Finished difference Result 647 states and 666 transitions. [2021-11-03 22:57:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:57:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-03 22:57:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:57:54,537 INFO L225 Difference]: With dead ends: 647 [2021-11-03 22:57:54,537 INFO L226 Difference]: Without dead ends: 645 [2021-11-03 22:57:54,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 344.87ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:57:54,538 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6125.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.93ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6690.72ms IncrementalHoareTripleChecker+Time [2021-11-03 22:57:54,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 1247 Unknown, 0 Unchecked, 8.93ms Time], IncrementalHoareTripleChecker [4 Valid, 1242 Invalid, 1 Unknown, 0 Unchecked, 6690.72ms Time] [2021-11-03 22:57:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-11-03 22:57:54,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 558. [2021-11-03 22:57:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 549 states have (on average 1.04735883424408) internal successors, (575), 557 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 575 transitions. [2021-11-03 22:57:54,571 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 575 transitions. Word has length 129 [2021-11-03 22:57:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:57:54,571 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 575 transitions. [2021-11-03 22:57:54,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 575 transitions. [2021-11-03 22:57:54,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-03 22:57:54,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:57:54,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:57:54,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-03 22:57:54,573 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:57:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:57:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash 564907476, now seen corresponding path program 1 times [2021-11-03 22:57:54,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:57:54,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376101296] [2021-11-03 22:57:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:57:54,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:57:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:57:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:57:54,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:57:54,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376101296] [2021-11-03 22:57:54,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376101296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:57:54,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:57:54,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:57:54,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103271263] [2021-11-03 22:57:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:57:54,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:57:54,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:57:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:57:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:57:54,890 INFO L87 Difference]: Start difference. First operand 558 states and 575 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:57:57,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:01,263 INFO L93 Difference]: Finished difference Result 620 states and 637 transitions. [2021-11-03 22:58:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:58:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-03 22:58:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:01,264 INFO L225 Difference]: With dead ends: 620 [2021-11-03 22:58:01,264 INFO L226 Difference]: Without dead ends: 591 [2021-11-03 22:58:01,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 211.55ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:58:01,264 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 390 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5661.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.58ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6189.75ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:01,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 0 Invalid, 947 Unknown, 0 Unchecked, 8.58ms Time], IncrementalHoareTripleChecker [11 Valid, 935 Invalid, 1 Unknown, 0 Unchecked, 6189.75ms Time] [2021-11-03 22:58:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-03 22:58:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 568. [2021-11-03 22:58:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 559 states have (on average 1.0465116279069768) internal successors, (585), 567 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 585 transitions. [2021-11-03 22:58:01,298 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 585 transitions. Word has length 131 [2021-11-03 22:58:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:01,299 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 585 transitions. [2021-11-03 22:58:01,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 585 transitions. [2021-11-03 22:58:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 22:58:01,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:01,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:01,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-03 22:58:01,300 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:58:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash 349411931, now seen corresponding path program 1 times [2021-11-03 22:58:01,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:01,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730270965] [2021-11-03 22:58:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:01,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:01,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:01,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730270965] [2021-11-03 22:58:01,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730270965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:01,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:01,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:58:01,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536309102] [2021-11-03 22:58:01,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:01,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:58:01,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:58:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:58:01,777 INFO L87 Difference]: Start difference. First operand 568 states and 585 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:04,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:06,904 INFO L93 Difference]: Finished difference Result 568 states and 585 transitions. [2021-11-03 22:58:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:58:06,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-03 22:58:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:06,906 INFO L225 Difference]: With dead ends: 568 [2021-11-03 22:58:06,906 INFO L226 Difference]: Without dead ends: 566 [2021-11-03 22:58:06,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 312.61ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:58:06,906 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 567 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4496.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.38ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4936.22ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:06,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 5.38ms Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 4936.22ms Time] [2021-11-03 22:58:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-03 22:58:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2021-11-03 22:58:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 558 states have (on average 1.0448028673835126) internal successors, (583), 565 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 583 transitions. [2021-11-03 22:58:06,938 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 583 transitions. Word has length 132 [2021-11-03 22:58:06,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:06,938 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 583 transitions. [2021-11-03 22:58:06,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:06,938 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 583 transitions. [2021-11-03 22:58:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-03 22:58:06,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:06,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:06,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-03 22:58:06,939 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:58:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2127535411, now seen corresponding path program 1 times [2021-11-03 22:58:06,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:06,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487616111] [2021-11-03 22:58:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:06,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:11,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:11,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487616111] [2021-11-03 22:58:11,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487616111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:11,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:11,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:58:11,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817595512] [2021-11-03 22:58:11,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:11,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:58:11,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:58:11,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:58:11,812 INFO L87 Difference]: Start difference. First operand 566 states and 583 transitions. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:14,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:25,799 INFO L93 Difference]: Finished difference Result 1039 states and 1063 transitions. [2021-11-03 22:58:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:58:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-03 22:58:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:25,800 INFO L225 Difference]: With dead ends: 1039 [2021-11-03 22:58:25,800 INFO L226 Difference]: Without dead ends: 924 [2021-11-03 22:58:25,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4900.32ms TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:58:25,801 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1321 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9236.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.15ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9909.61ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:25,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1321 Valid, 0 Invalid, 2637 Unknown, 0 Unchecked, 21.15ms Time], IncrementalHoareTripleChecker [23 Valid, 2613 Invalid, 1 Unknown, 0 Unchecked, 9909.61ms Time] [2021-11-03 22:58:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-11-03 22:58:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 601. [2021-11-03 22:58:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 593 states have (on average 1.042158516020236) internal successors, (618), 600 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 618 transitions. [2021-11-03 22:58:25,835 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 618 transitions. Word has length 132 [2021-11-03 22:58:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:25,835 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 618 transitions. [2021-11-03 22:58:25,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 618 transitions. [2021-11-03 22:58:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-03 22:58:25,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:25,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:25,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-03 22:58:25,837 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:58:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash 777560797, now seen corresponding path program 1 times [2021-11-03 22:58:25,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:25,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589362969] [2021-11-03 22:58:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:25,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:26,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:26,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589362969] [2021-11-03 22:58:26,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589362969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:26,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:26,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:58:26,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949905143] [2021-11-03 22:58:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:26,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:58:26,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:58:26,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:58:26,115 INFO L87 Difference]: Start difference. First operand 601 states and 618 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:28,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:31,686 INFO L93 Difference]: Finished difference Result 874 states and 894 transitions. [2021-11-03 22:58:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:58:31,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-03 22:58:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:31,688 INFO L225 Difference]: With dead ends: 874 [2021-11-03 22:58:31,688 INFO L226 Difference]: Without dead ends: 872 [2021-11-03 22:58:31,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.75ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:58:31,689 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4953.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5419.92ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:31,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 899 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [2 Valid, 896 Invalid, 1 Unknown, 0 Unchecked, 5419.92ms Time] [2021-11-03 22:58:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-03 22:58:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 854. [2021-11-03 22:58:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 846 states have (on average 1.0366430260047281) internal successors, (877), 853 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 877 transitions. [2021-11-03 22:58:31,744 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 877 transitions. Word has length 134 [2021-11-03 22:58:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:31,744 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 877 transitions. [2021-11-03 22:58:31,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 877 transitions. [2021-11-03 22:58:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 22:58:31,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:31,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:31,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-03 22:58:31,746 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:58:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 286235341, now seen corresponding path program 1 times [2021-11-03 22:58:31,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:31,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811618585] [2021-11-03 22:58:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:31,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:36,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:36,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811618585] [2021-11-03 22:58:36,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811618585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:36,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:36,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:58:36,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927667490] [2021-11-03 22:58:36,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:36,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:58:36,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:58:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:58:36,329 INFO L87 Difference]: Start difference. First operand 854 states and 877 transitions. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:38,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:49,523 INFO L93 Difference]: Finished difference Result 923 states and 943 transitions. [2021-11-03 22:58:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:58:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-11-03 22:58:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:49,524 INFO L225 Difference]: With dead ends: 923 [2021-11-03 22:58:49,524 INFO L226 Difference]: Without dead ends: 921 [2021-11-03 22:58:49,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3543.11ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:58:49,525 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1173 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9713.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.35ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10412.58ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:49,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 0 Invalid, 2674 Unknown, 0 Unchecked, 26.35ms Time], IncrementalHoareTripleChecker [32 Valid, 2641 Invalid, 1 Unknown, 0 Unchecked, 10412.58ms Time] [2021-11-03 22:58:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-03 22:58:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 852. [2021-11-03 22:58:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 845 states have (on average 1.0355029585798816) internal successors, (875), 851 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 875 transitions. [2021-11-03 22:58:49,582 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 875 transitions. Word has length 135 [2021-11-03 22:58:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:49,582 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 875 transitions. [2021-11-03 22:58:49,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 875 transitions. [2021-11-03 22:58:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-03 22:58:49,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:49,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:49,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-03 22:58:49,584 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:58:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash -88239105, now seen corresponding path program 1 times [2021-11-03 22:58:49,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:49,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045333377] [2021-11-03 22:58:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:49,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:58:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:58:53,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:58:53,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045333377] [2021-11-03 22:58:53,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045333377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:58:53,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:58:53,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:58:53,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522599212] [2021-11-03 22:58:53,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:58:53,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:58:53,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:58:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:58:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:58:53,564 INFO L87 Difference]: Start difference. First operand 852 states and 875 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:56,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:58:59,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:58:59,131 INFO L93 Difference]: Finished difference Result 870 states and 890 transitions. [2021-11-03 22:58:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:58:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-11-03 22:58:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:58:59,133 INFO L225 Difference]: With dead ends: 870 [2021-11-03 22:58:59,133 INFO L226 Difference]: Without dead ends: 868 [2021-11-03 22:58:59,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 194.41ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:58:59,133 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 384 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4910.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5384.95ms IncrementalHoareTripleChecker+Time [2021-11-03 22:58:59,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 0 Invalid, 893 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [4 Valid, 888 Invalid, 1 Unknown, 0 Unchecked, 5384.95ms Time] [2021-11-03 22:58:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-03 22:58:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 854. [2021-11-03 22:58:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 847 states have (on average 1.0354191263282173) internal successors, (877), 853 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 877 transitions. [2021-11-03 22:58:59,187 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 877 transitions. Word has length 136 [2021-11-03 22:58:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:58:59,187 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 877 transitions. [2021-11-03 22:58:59,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:58:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 877 transitions. [2021-11-03 22:58:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 22:58:59,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:58:59,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:58:59,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-03 22:58:59,188 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-03 22:58:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:58:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1892360273, now seen corresponding path program 1 times [2021-11-03 22:58:59,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:58:59,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988519934] [2021-11-03 22:58:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:58:59,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:58:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15