./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_from_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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:01:59,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:01:59,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:01:59,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:01:59,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:01:59,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:01:59,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:01:59,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:01:59,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:01:59,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:01:59,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:01:59,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:01:59,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:01:59,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:01:59,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:01:59,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:01:59,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:01:59,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:01:59,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:01:59,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:01:59,454 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:01:59,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:01:59,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:01:59,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:01:59,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:01:59,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:01:59,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:01:59,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:01:59,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:01:59,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:01:59,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:01:59,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:01:59,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:01:59,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:01:59,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:01:59,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:01:59,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:01:59,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:01:59,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:01:59,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:01:59,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:01:59,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:01:59,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:01:59,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:01:59,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:01:59,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:01:59,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:01:59,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:01:59,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:01:59,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:01:59,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:01:59,488 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:01:59,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:01:59,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:01:59,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:01:59,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:01:59,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:01:59,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:01:59,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:01:59,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:01:59,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:01:59,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:01:59,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:01:59,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:01:59,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:01:59,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:01:59,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:01:59,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2022-07-12 11:01:59,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:01:59,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:01:59,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:01:59,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:01:59,712 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:01:59,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-07-12 11:01:59,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c29f93d0/f2b54d98328b4cfcbff166de2b7160e4/FLAG192cd6f27 [2022-07-12 11:02:00,390 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:02:00,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-07-12 11:02:00,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c29f93d0/f2b54d98328b4cfcbff166de2b7160e4/FLAG192cd6f27 [2022-07-12 11:02:00,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c29f93d0/f2b54d98328b4cfcbff166de2b7160e4 [2022-07-12 11:02:00,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:02:00,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:02:00,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:02:00,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:02:00,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:02:00,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:02:00" (1/1) ... [2022-07-12 11:02:00,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf519dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:00, skipping insertion in model container [2022-07-12 11:02:00,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:02:00" (1/1) ... [2022-07-12 11:02:00,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:02:00,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:02:01,162 WARN L230 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_from_buf_harness.i[4498,4511] [2022-07-12 11:02:01,167 WARN L230 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_from_buf_harness.i[4558,4571] [2022-07-12 11:02:01,708 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,709 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,709 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,710 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,710 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,718 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,721 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,722 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,724 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:01,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:02:01,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:02:01,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:02:01,955 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:02:01,958 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:02:01,962 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:02:01,963 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:02:01,964 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:02:01,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:02:01,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:02:02,073 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:02:02,141 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,142 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:02:02,244 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:02:02,254 WARN L230 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_from_buf_harness.i[4498,4511] [2022-07-12 11:02:02,254 WARN L230 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_from_buf_harness.i[4558,4571] [2022-07-12 11:02:02,301 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,302 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,303 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,303 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,304 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,314 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,317 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:02:02,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:02:02,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:02:02,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:02:02,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:02:02,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:02:02,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:02:02,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:02:02,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:02:02,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:02:02,378 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:02:02,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:02:02,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:02:02,695 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:02:02,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02 WrapperNode [2022-07-12 11:02:02,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:02:02,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:02:02,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:02:02,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:02:02,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,820 INFO L137 Inliner]: procedures = 690, calls = 2639, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 868 [2022-07-12 11:02:02,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:02:02,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:02:02,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:02:02,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:02:02,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:02:02,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:02:02,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:02:02,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:02:02,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (1/1) ... [2022-07-12 11:02:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:02:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:02,939 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) [2022-07-12 11:02:02,956 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 [2022-07-12 11:02:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 11:02:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 11:02:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-12 11:02:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-12 11:02:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:02:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:02:02,971 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:02:02,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:02:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:02:02,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:02:02,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2022-07-12 11:02:02,973 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2022-07-12 11:02:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:02:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:02:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:02:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:02:02,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:02:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:02:02,974 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:02:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 11:02:02,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 11:02:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:02:02,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:02:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:02:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:02:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:02:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 11:02:02,975 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 11:02:02,975 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:02:02,975 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:02:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:02:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:02:03,209 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:02:03,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:02:03,988 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:02:03,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:02:03,995 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 11:02:03,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:02:03 BoogieIcfgContainer [2022-07-12 11:02:03,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:02:03,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:02:03,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:02:04,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:02:04,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:02:00" (1/3) ... [2022-07-12 11:02:04,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ca162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:02:04, skipping insertion in model container [2022-07-12 11:02:04,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:02:02" (2/3) ... [2022-07-12 11:02:04,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ca162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:02:04, skipping insertion in model container [2022-07-12 11:02:04,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:02:03" (3/3) ... [2022-07-12 11:02:04,005 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2022-07-12 11:02:04,017 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:02:04,018 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:02:04,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:02:04,084 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e690716, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b4a1eff [2022-07-12 11:02:04,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:02:04,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-12 11:02:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 11:02:04,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:04,096 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:04,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash -963084782, now seen corresponding path program 1 times [2022-07-12 11:02:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:04,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450949956] [2022-07-12 11:02:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:02:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:02:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:02:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:02:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 11:02:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:04,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450949956] [2022-07-12 11:02:04,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450949956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:04,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:04,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:02:04,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11701305] [2022-07-12 11:02:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:02:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:02:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:02:04,635 INFO L87 Difference]: Start difference. First operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 11:02:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:04,845 INFO L93 Difference]: Finished difference Result 252 states and 347 transitions. [2022-07-12 11:02:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:02:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2022-07-12 11:02:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:04,853 INFO L225 Difference]: With dead ends: 252 [2022-07-12 11:02:04,853 INFO L226 Difference]: Without dead ends: 121 [2022-07-12 11:02:04,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:02:04,859 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 61 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:04,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 199 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:02:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-12 11:02:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-07-12 11:02:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 83 states have internal predecessors, (100), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-12 11:02:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2022-07-12 11:02:04,910 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 65 [2022-07-12 11:02:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:04,911 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2022-07-12 11:02:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 11:02:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2022-07-12 11:02:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 11:02:04,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:04,918 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:02:04,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash 178526858, now seen corresponding path program 1 times [2022-07-12 11:02:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:04,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300885854] [2022-07-12 11:02:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:02:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:02:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:02:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:02:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 11:02:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300885854] [2022-07-12 11:02:05,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300885854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676719065] [2022-07-12 11:02:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:05,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:05,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:05,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:05,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:02:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:05,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:02:05,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 11:02:05,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:05,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676719065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:05,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:05,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 11:02:05,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929726725] [2022-07-12 11:02:05,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:05,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:02:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:05,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:02:05,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:02:05,840 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 11:02:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:06,005 INFO L93 Difference]: Finished difference Result 220 states and 286 transitions. [2022-07-12 11:02:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:02:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2022-07-12 11:02:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:06,009 INFO L225 Difference]: With dead ends: 220 [2022-07-12 11:02:06,010 INFO L226 Difference]: Without dead ends: 124 [2022-07-12 11:02:06,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:02:06,011 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 181 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:06,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 330 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:02:06,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-12 11:02:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-07-12 11:02:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 86 states have internal predecessors, (102), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-07-12 11:02:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2022-07-12 11:02:06,024 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 65 [2022-07-12 11:02:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:06,025 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2022-07-12 11:02:06,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 11:02:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2022-07-12 11:02:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 11:02:06,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:06,030 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:06,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 11:02:06,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:06,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:06,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash 253294421, now seen corresponding path program 1 times [2022-07-12 11:02:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:06,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416240337] [2022-07-12 11:02:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:06,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:02:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:02:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:02:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 11:02:06,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416240337] [2022-07-12 11:02:06,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416240337] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932491042] [2022-07-12 11:02:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:06,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:06,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:06,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:02:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:02:07,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 11:02:07,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:07,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932491042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:07,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:07,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-12 11:02:07,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643298468] [2022-07-12 11:02:07,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:07,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:02:07,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:02:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:02:07,152 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 11:02:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:07,350 INFO L93 Difference]: Finished difference Result 213 states and 272 transitions. [2022-07-12 11:02:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:02:07,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2022-07-12 11:02:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:07,351 INFO L225 Difference]: With dead ends: 213 [2022-07-12 11:02:07,351 INFO L226 Difference]: Without dead ends: 121 [2022-07-12 11:02:07,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:02:07,352 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 180 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:07,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 637 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:02:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-12 11:02:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-07-12 11:02:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 83 states have internal predecessors, (99), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-12 11:02:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2022-07-12 11:02:07,360 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 71 [2022-07-12 11:02:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:07,360 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2022-07-12 11:02:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-12 11:02:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2022-07-12 11:02:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 11:02:07,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:07,361 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:07,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 11:02:07,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -241480736, now seen corresponding path program 1 times [2022-07-12 11:02:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:07,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860870393] [2022-07-12 11:02:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:02:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:02:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:02:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 11:02:07,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:07,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860870393] [2022-07-12 11:02:07,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860870393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:07,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:07,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:02:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590708572] [2022-07-12 11:02:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:07,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:02:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:02:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:02:07,789 INFO L87 Difference]: Start difference. First operand 121 states and 154 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 11:02:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:08,002 INFO L93 Difference]: Finished difference Result 207 states and 264 transitions. [2022-07-12 11:02:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:02:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-07-12 11:02:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:08,004 INFO L225 Difference]: With dead ends: 207 [2022-07-12 11:02:08,004 INFO L226 Difference]: Without dead ends: 124 [2022-07-12 11:02:08,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:02:08,005 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 77 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:08,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 309 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:02:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-12 11:02:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-07-12 11:02:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-07-12 11:02:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 157 transitions. [2022-07-12 11:02:08,015 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 157 transitions. Word has length 77 [2022-07-12 11:02:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:08,016 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 157 transitions. [2022-07-12 11:02:08,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 11:02:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 157 transitions. [2022-07-12 11:02:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 11:02:08,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:08,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:08,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 11:02:08,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1300692571, now seen corresponding path program 1 times [2022-07-12 11:02:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:08,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182949654] [2022-07-12 11:02:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:02:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:02:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:02:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 11:02:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:08,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182949654] [2022-07-12 11:02:08,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182949654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:08,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:08,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:02:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980235886] [2022-07-12 11:02:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:08,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:02:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:02:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:02:08,265 INFO L87 Difference]: Start difference. First operand 124 states and 157 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 11:02:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:08,684 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2022-07-12 11:02:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:02:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-07-12 11:02:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:08,686 INFO L225 Difference]: With dead ends: 136 [2022-07-12 11:02:08,686 INFO L226 Difference]: Without dead ends: 134 [2022-07-12 11:02:08,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:02:08,686 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 79 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:08,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 573 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:02:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-12 11:02:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-07-12 11:02:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 93 states have internal predecessors, (107), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (31), 28 states have call predecessors, (31), 28 states have call successors, (31) [2022-07-12 11:02:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 167 transitions. [2022-07-12 11:02:08,694 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 167 transitions. Word has length 79 [2022-07-12 11:02:08,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:08,695 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 167 transitions. [2022-07-12 11:02:08,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 11:02:08,695 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 167 transitions. [2022-07-12 11:02:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 11:02:08,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:08,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:08,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 11:02:08,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1177544493, now seen corresponding path program 1 times [2022-07-12 11:02:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:08,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975535259] [2022-07-12 11:02:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:02:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:02:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:02:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 11:02:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:09,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975535259] [2022-07-12 11:02:09,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975535259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:09,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:09,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 11:02:09,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304168127] [2022-07-12 11:02:09,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:09,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 11:02:09,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 11:02:09,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:02:09,325 INFO L87 Difference]: Start difference. First operand 133 states and 167 transitions. Second operand has 18 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 11:02:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:10,460 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2022-07-12 11:02:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 11:02:10,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 83 [2022-07-12 11:02:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:10,462 INFO L225 Difference]: With dead ends: 264 [2022-07-12 11:02:10,462 INFO L226 Difference]: Without dead ends: 174 [2022-07-12 11:02:10,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:02:10,463 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 207 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:10,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 476 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:02:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-12 11:02:10,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 144. [2022-07-12 11:02:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 99 states have internal predecessors, (112), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-12 11:02:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 182 transitions. [2022-07-12 11:02:10,475 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 182 transitions. Word has length 83 [2022-07-12 11:02:10,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:10,476 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 182 transitions. [2022-07-12 11:02:10,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 11:02:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 182 transitions. [2022-07-12 11:02:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 11:02:10,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:10,477 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:10,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 11:02:10,477 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash 340573773, now seen corresponding path program 1 times [2022-07-12 11:02:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:10,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861132419] [2022-07-12 11:02:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:02:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:10,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861132419] [2022-07-12 11:02:10,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861132419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:10,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:10,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 11:02:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939578431] [2022-07-12 11:02:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:10,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 11:02:10,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 11:02:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:02:10,979 INFO L87 Difference]: Start difference. First operand 144 states and 182 transitions. Second operand has 16 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:02:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:12,068 INFO L93 Difference]: Finished difference Result 260 states and 335 transitions. [2022-07-12 11:02:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 11:02:12,069 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 90 [2022-07-12 11:02:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:12,070 INFO L225 Difference]: With dead ends: 260 [2022-07-12 11:02:12,070 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 11:02:12,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:02:12,071 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 192 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:12,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 703 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 11:02:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 11:02:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2022-07-12 11:02:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 112 states have internal predecessors, (128), 36 states have call successors, (36), 12 states have call predecessors, (36), 15 states have return successors, (42), 34 states have call predecessors, (42), 35 states have call successors, (42) [2022-07-12 11:02:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 206 transitions. [2022-07-12 11:02:12,081 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 206 transitions. Word has length 90 [2022-07-12 11:02:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:12,082 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 206 transitions. [2022-07-12 11:02:12,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:02:12,082 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 206 transitions. [2022-07-12 11:02:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 11:02:12,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:12,083 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:02:12,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:12,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1726777167, now seen corresponding path program 1 times [2022-07-12 11:02:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971367313] [2022-07-12 11:02:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:02:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 11:02:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971367313] [2022-07-12 11:02:12,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971367313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:12,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:12,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:02:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598986187] [2022-07-12 11:02:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:02:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:02:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:02:12,252 INFO L87 Difference]: Start difference. First operand 159 states and 206 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:12,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:12,453 INFO L93 Difference]: Finished difference Result 293 states and 388 transitions. [2022-07-12 11:02:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:02:12,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-07-12 11:02:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:12,455 INFO L225 Difference]: With dead ends: 293 [2022-07-12 11:02:12,455 INFO L226 Difference]: Without dead ends: 159 [2022-07-12 11:02:12,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:02:12,456 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 80 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:12,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 329 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:02:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-12 11:02:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-07-12 11:02:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 112 states have internal predecessors, (127), 36 states have call successors, (36), 12 states have call predecessors, (36), 15 states have return successors, (42), 34 states have call predecessors, (42), 35 states have call successors, (42) [2022-07-12 11:02:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2022-07-12 11:02:12,466 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 90 [2022-07-12 11:02:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:12,466 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2022-07-12 11:02:12,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2022-07-12 11:02:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 11:02:12,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:12,467 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:12,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 11:02:12,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 383299479, now seen corresponding path program 1 times [2022-07-12 11:02:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:12,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647831341] [2022-07-12 11:02:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:12,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:02:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:02:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 11:02:12,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:12,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647831341] [2022-07-12 11:02:12,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647831341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:12,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:12,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:02:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063038561] [2022-07-12 11:02:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:12,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:02:12,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:02:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:02:12,738 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 11:02:13,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:13,137 INFO L93 Difference]: Finished difference Result 289 states and 375 transitions. [2022-07-12 11:02:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:02:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-07-12 11:02:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:13,140 INFO L225 Difference]: With dead ends: 289 [2022-07-12 11:02:13,140 INFO L226 Difference]: Without dead ends: 169 [2022-07-12 11:02:13,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:02:13,141 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 72 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:13,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 643 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:02:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-12 11:02:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2022-07-12 11:02:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 117 states have internal predecessors, (131), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-12 11:02:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2022-07-12 11:02:13,152 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 94 [2022-07-12 11:02:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:13,153 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2022-07-12 11:02:13,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 11:02:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2022-07-12 11:02:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 11:02:13,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:13,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:13,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 11:02:13,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1721484580, now seen corresponding path program 1 times [2022-07-12 11:02:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:13,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89837479] [2022-07-12 11:02:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:13,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:13,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89837479] [2022-07-12 11:02:13,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89837479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:13,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628244834] [2022-07-12 11:02:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:13,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:13,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:13,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:13,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:02:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:13,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 11:02:13,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 11:02:13,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:13,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628244834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:13,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:13,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-12 11:02:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317579041] [2022-07-12 11:02:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:13,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:02:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:02:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:02:13,970 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:14,195 INFO L93 Difference]: Finished difference Result 335 states and 441 transitions. [2022-07-12 11:02:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:02:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-12 11:02:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:14,219 INFO L225 Difference]: With dead ends: 335 [2022-07-12 11:02:14,219 INFO L226 Difference]: Without dead ends: 196 [2022-07-12 11:02:14,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:02:14,220 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 34 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:14,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 660 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-07-12 11:02:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-12 11:02:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 172. [2022-07-12 11:02:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 125 states have internal predecessors, (142), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-12 11:02:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2022-07-12 11:02:14,229 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 96 [2022-07-12 11:02:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:14,230 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2022-07-12 11:02:14,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2022-07-12 11:02:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 11:02:14,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:14,231 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:14,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:14,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -335281186, now seen corresponding path program 1 times [2022-07-12 11:02:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:14,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270105661] [2022-07-12 11:02:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 11:02:15,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:15,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270105661] [2022-07-12 11:02:15,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270105661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:15,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901953215] [2022-07-12 11:02:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:15,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:15,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:15,024 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:15,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:02:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:15,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:02:15,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 11:02:15,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:15,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901953215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:15,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:15,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 24 [2022-07-12 11:02:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208394268] [2022-07-12 11:02:15,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:15,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:02:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:02:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:02:15,547 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:15,672 INFO L93 Difference]: Finished difference Result 344 states and 461 transitions. [2022-07-12 11:02:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:02:15,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-12 11:02:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:15,674 INFO L225 Difference]: With dead ends: 344 [2022-07-12 11:02:15,674 INFO L226 Difference]: Without dead ends: 197 [2022-07-12 11:02:15,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-07-12 11:02:15,675 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 40 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:15,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 522 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-07-12 11:02:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-12 11:02:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2022-07-12 11:02:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 128 states have internal predecessors, (145), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-12 11:02:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 225 transitions. [2022-07-12 11:02:15,689 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 225 transitions. Word has length 96 [2022-07-12 11:02:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:15,690 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 225 transitions. [2022-07-12 11:02:15,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 225 transitions. [2022-07-12 11:02:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 11:02:15,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:15,691 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:15,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:15,912 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:15,912 INFO L85 PathProgramCache]: Analyzing trace with hash -60521572, now seen corresponding path program 1 times [2022-07-12 11:02:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450302179] [2022-07-12 11:02:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:15,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 11:02:16,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:16,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450302179] [2022-07-12 11:02:16,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450302179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:16,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:16,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:02:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475775306] [2022-07-12 11:02:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:16,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:02:16,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:02:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:02:16,086 INFO L87 Difference]: Start difference. First operand 175 states and 225 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:16,280 INFO L93 Difference]: Finished difference Result 331 states and 437 transitions. [2022-07-12 11:02:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:02:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-12 11:02:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:16,282 INFO L225 Difference]: With dead ends: 331 [2022-07-12 11:02:16,282 INFO L226 Difference]: Without dead ends: 181 [2022-07-12 11:02:16,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:02:16,283 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 73 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:16,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 317 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:02:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-12 11:02:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 173. [2022-07-12 11:02:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 126 states have internal predecessors, (142), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-07-12 11:02:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2022-07-12 11:02:16,294 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 96 [2022-07-12 11:02:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:16,295 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2022-07-12 11:02:16,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2022-07-12 11:02:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 11:02:16,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:16,297 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:16,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 11:02:16,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1061953058, now seen corresponding path program 1 times [2022-07-12 11:02:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:16,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936199227] [2022-07-12 11:02:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936199227] [2022-07-12 11:02:16,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936199227] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176259354] [2022-07-12 11:02:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:16,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:16,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:02:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:16,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 11:02:16,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:17,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:02:17,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-12 11:02:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 11:02:17,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:17,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176259354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:17,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:17,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 15 [2022-07-12 11:02:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054336734] [2022-07-12 11:02:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:17,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:02:17,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:17,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:02:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:02:17,224 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:02:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:17,559 INFO L93 Difference]: Finished difference Result 363 states and 475 transitions. [2022-07-12 11:02:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 11:02:17,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 96 [2022-07-12 11:02:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:17,560 INFO L225 Difference]: With dead ends: 363 [2022-07-12 11:02:17,560 INFO L226 Difference]: Without dead ends: 229 [2022-07-12 11:02:17,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:02:17,561 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 123 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:17,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1398 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 263 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-07-12 11:02:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-12 11:02:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 192. [2022-07-12 11:02:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.162962962962963) internal successors, (157), 142 states have internal predecessors, (157), 37 states have call successors, (37), 13 states have call predecessors, (37), 19 states have return successors, (51), 36 states have call predecessors, (51), 36 states have call successors, (51) [2022-07-12 11:02:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 245 transitions. [2022-07-12 11:02:17,573 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 245 transitions. Word has length 96 [2022-07-12 11:02:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:17,574 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 245 transitions. [2022-07-12 11:02:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:02:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 245 transitions. [2022-07-12 11:02:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 11:02:17,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:17,575 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:17,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 11:02:17,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1793920484, now seen corresponding path program 1 times [2022-07-12 11:02:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:17,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194734557] [2022-07-12 11:02:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:02:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:02:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 11:02:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:17,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194734557] [2022-07-12 11:02:17,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194734557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:17,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349735628] [2022-07-12 11:02:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:17,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:17,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:17,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:17,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:02:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:02:18,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 11:02:18,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:18,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349735628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:18,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:18,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 11:02:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127302683] [2022-07-12 11:02:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:18,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:02:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:02:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:02:18,381 INFO L87 Difference]: Start difference. First operand 192 states and 245 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:18,401 INFO L93 Difference]: Finished difference Result 345 states and 444 transitions. [2022-07-12 11:02:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:02:18,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-12 11:02:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:18,402 INFO L225 Difference]: With dead ends: 345 [2022-07-12 11:02:18,402 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 11:02:18,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:02:18,403 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 26 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:18,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 462 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:02:18,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 11:02:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2022-07-12 11:02:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 130 states have internal predecessors, (141), 37 states have call successors, (37), 13 states have call predecessors, (37), 18 states have return successors, (47), 36 states have call predecessors, (47), 36 states have call successors, (47) [2022-07-12 11:02:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2022-07-12 11:02:18,412 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 96 [2022-07-12 11:02:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:18,413 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2022-07-12 11:02:18,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 11:02:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2022-07-12 11:02:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 11:02:18,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:18,414 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:18,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:18,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1638074292, now seen corresponding path program 1 times [2022-07-12 11:02:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:18,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538896381] [2022-07-12 11:02:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:18,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:02:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:02:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 11:02:18,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:18,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538896381] [2022-07-12 11:02:18,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538896381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:18,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:18,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:02:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121657838] [2022-07-12 11:02:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:02:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:02:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:02:18,851 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:02:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:19,274 INFO L93 Difference]: Finished difference Result 188 states and 233 transitions. [2022-07-12 11:02:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:02:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2022-07-12 11:02:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:19,276 INFO L225 Difference]: With dead ends: 188 [2022-07-12 11:02:19,276 INFO L226 Difference]: Without dead ends: 186 [2022-07-12 11:02:19,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:02:19,276 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 144 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:19,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 547 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:02:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-12 11:02:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-07-12 11:02:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 133 states have internal predecessors, (144), 38 states have call successors, (38), 14 states have call predecessors, (38), 19 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-12 11:02:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 230 transitions. [2022-07-12 11:02:19,288 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 230 transitions. Word has length 100 [2022-07-12 11:02:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:19,288 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 230 transitions. [2022-07-12 11:02:19,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:02:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 230 transitions. [2022-07-12 11:02:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 11:02:19,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:19,290 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:19,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 11:02:19,290 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1497297622, now seen corresponding path program 1 times [2022-07-12 11:02:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:19,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122375417] [2022-07-12 11:02:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:19,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:02:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:02:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:02:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:02:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:02:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 11:02:19,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122375417] [2022-07-12 11:02:19,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122375417] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975140224] [2022-07-12 11:02:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:19,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:19,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:19,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:02:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:02:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 11:02:19,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:19,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975140224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:19,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:19,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 11:02:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924399582] [2022-07-12 11:02:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:19,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:02:19,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:02:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:02:19,956 INFO L87 Difference]: Start difference. First operand 185 states and 230 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 11:02:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:20,041 INFO L93 Difference]: Finished difference Result 341 states and 425 transitions. [2022-07-12 11:02:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:02:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-07-12 11:02:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:20,043 INFO L225 Difference]: With dead ends: 341 [2022-07-12 11:02:20,043 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 11:02:20,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:02:20,044 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 12 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:20,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1147 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:02:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 11:02:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2022-07-12 11:02:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 125 states have internal predecessors, (137), 38 states have call successors, (38), 14 states have call predecessors, (38), 18 states have return successors, (45), 37 states have call predecessors, (45), 37 states have call successors, (45) [2022-07-12 11:02:20,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 220 transitions. [2022-07-12 11:02:20,056 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 220 transitions. Word has length 100 [2022-07-12 11:02:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:20,056 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 220 transitions. [2022-07-12 11:02:20,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 11:02:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 220 transitions. [2022-07-12 11:02:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 11:02:20,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:20,058 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:20,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:20,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:20,278 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1094528621, now seen corresponding path program 1 times [2022-07-12 11:02:20,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:20,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079813538] [2022-07-12 11:02:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:02:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:20,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079813538] [2022-07-12 11:02:20,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079813538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:20,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577413177] [2022-07-12 11:02:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:20,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:20,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:20,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:20,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:02:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:21,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 11:02:21,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:21,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-12 11:02:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 11:02:21,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:21,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577413177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:21,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:21,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 14 [2022-07-12 11:02:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124026901] [2022-07-12 11:02:21,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:21,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:02:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:02:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:02:21,185 INFO L87 Difference]: Start difference. First operand 177 states and 220 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-12 11:02:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:21,625 INFO L93 Difference]: Finished difference Result 410 states and 542 transitions. [2022-07-12 11:02:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:02:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 102 [2022-07-12 11:02:21,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:21,627 INFO L225 Difference]: With dead ends: 410 [2022-07-12 11:02:21,627 INFO L226 Difference]: Without dead ends: 279 [2022-07-12 11:02:21,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:02:21,627 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 103 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:21,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1210 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 379 Invalid, 0 Unknown, 65 Unchecked, 0.3s Time] [2022-07-12 11:02:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-12 11:02:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 183. [2022-07-12 11:02:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 125 states have (on average 1.136) internal successors, (142), 131 states have internal predecessors, (142), 38 states have call successors, (38), 14 states have call predecessors, (38), 19 states have return successors, (49), 37 states have call predecessors, (49), 37 states have call successors, (49) [2022-07-12 11:02:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 229 transitions. [2022-07-12 11:02:21,638 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 229 transitions. Word has length 102 [2022-07-12 11:02:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:21,639 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 229 transitions. [2022-07-12 11:02:21,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-12 11:02:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 229 transitions. [2022-07-12 11:02:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 11:02:21,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:21,640 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:21,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-12 11:02:21,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 11:02:21,859 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1040135723, now seen corresponding path program 1 times [2022-07-12 11:02:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:21,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001343148] [2022-07-12 11:02:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:02:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:22,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001343148] [2022-07-12 11:02:22,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001343148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:22,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:22,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 11:02:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602725491] [2022-07-12 11:02:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:02:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:02:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:02:22,316 INFO L87 Difference]: Start difference. First operand 183 states and 229 transitions. Second operand has 19 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2022-07-12 11:02:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:23,353 INFO L93 Difference]: Finished difference Result 310 states and 382 transitions. [2022-07-12 11:02:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 11:02:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 102 [2022-07-12 11:02:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:23,354 INFO L225 Difference]: With dead ends: 310 [2022-07-12 11:02:23,354 INFO L226 Difference]: Without dead ends: 183 [2022-07-12 11:02:23,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-07-12 11:02:23,355 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 164 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:23,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 723 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:02:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-12 11:02:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-07-12 11:02:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 125 states have (on average 1.136) internal successors, (142), 131 states have internal predecessors, (142), 38 states have call successors, (38), 14 states have call predecessors, (38), 19 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-12 11:02:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 228 transitions. [2022-07-12 11:02:23,373 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 228 transitions. Word has length 102 [2022-07-12 11:02:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:23,374 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 228 transitions. [2022-07-12 11:02:23,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2022-07-12 11:02:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 228 transitions. [2022-07-12 11:02:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 11:02:23,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:23,375 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:23,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 11:02:23,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:23,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:23,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1868628179, now seen corresponding path program 1 times [2022-07-12 11:02:23,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:23,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610806434] [2022-07-12 11:02:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:23,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:02:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 11:02:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610806434] [2022-07-12 11:02:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610806434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:24,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:24,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-12 11:02:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187915032] [2022-07-12 11:02:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:24,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 11:02:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 11:02:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:02:24,307 INFO L87 Difference]: Start difference. First operand 183 states and 228 transitions. Second operand has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:02:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:25,738 INFO L93 Difference]: Finished difference Result 325 states and 400 transitions. [2022-07-12 11:02:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 11:02:25,739 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 102 [2022-07-12 11:02:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:25,740 INFO L225 Difference]: With dead ends: 325 [2022-07-12 11:02:25,740 INFO L226 Difference]: Without dead ends: 206 [2022-07-12 11:02:25,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=1597, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 11:02:25,741 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 163 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:25,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 893 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:02:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-12 11:02:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 187. [2022-07-12 11:02:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.1395348837209303) internal successors, (147), 135 states have internal predecessors, (147), 38 states have call successors, (38), 14 states have call predecessors, (38), 19 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-12 11:02:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 233 transitions. [2022-07-12 11:02:25,753 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 233 transitions. Word has length 102 [2022-07-12 11:02:25,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:25,753 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 233 transitions. [2022-07-12 11:02:25,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 11:02:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 233 transitions. [2022-07-12 11:02:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 11:02:25,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:25,754 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 11:02:25,754 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1610462741, now seen corresponding path program 1 times [2022-07-12 11:02:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:25,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377648557] [2022-07-12 11:02:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:02:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:02:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377648557] [2022-07-12 11:02:25,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377648557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:25,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:25,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:02:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970235615] [2022-07-12 11:02:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:02:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:02:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:02:25,954 INFO L87 Difference]: Start difference. First operand 187 states and 233 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 11:02:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:26,218 INFO L93 Difference]: Finished difference Result 308 states and 379 transitions. [2022-07-12 11:02:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:02:26,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 102 [2022-07-12 11:02:26,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:26,220 INFO L225 Difference]: With dead ends: 308 [2022-07-12 11:02:26,220 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 11:02:26,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:02:26,221 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 68 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:26,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 297 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:02:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 11:02:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-07-12 11:02:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 127 states have (on average 1.125984251968504) internal successors, (143), 133 states have internal predecessors, (143), 38 states have call successors, (38), 14 states have call predecessors, (38), 19 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-12 11:02:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 229 transitions. [2022-07-12 11:02:26,231 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 229 transitions. Word has length 102 [2022-07-12 11:02:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:26,231 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 229 transitions. [2022-07-12 11:02:26,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 11:02:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 229 transitions. [2022-07-12 11:02:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 11:02:26,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:26,232 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:26,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 11:02:26,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash -63505454, now seen corresponding path program 1 times [2022-07-12 11:02:26,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776762512] [2022-07-12 11:02:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:26,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:02:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:02:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:02:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 11:02:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776762512] [2022-07-12 11:02:26,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776762512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874233608] [2022-07-12 11:02:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:26,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:26,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:26,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:02:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 11:02:27,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:27,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 11:02:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 11:02:27,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:02:27,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874233608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:27,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:02:27,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 21 [2022-07-12 11:02:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342586645] [2022-07-12 11:02:27,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:27,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:02:27,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:02:27,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:02:27,389 INFO L87 Difference]: Start difference. First operand 185 states and 229 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 11:02:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:27,465 INFO L93 Difference]: Finished difference Result 341 states and 413 transitions. [2022-07-12 11:02:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:02:27,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 104 [2022-07-12 11:02:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:27,466 INFO L225 Difference]: With dead ends: 341 [2022-07-12 11:02:27,466 INFO L226 Difference]: Without dead ends: 192 [2022-07-12 11:02:27,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:02:27,468 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 72 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:27,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 645 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 51 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-07-12 11:02:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-12 11:02:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2022-07-12 11:02:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.123076923076923) internal successors, (146), 135 states have internal predecessors, (146), 38 states have call successors, (38), 15 states have call predecessors, (38), 19 states have return successors, (47), 37 states have call predecessors, (47), 37 states have call successors, (47) [2022-07-12 11:02:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 231 transitions. [2022-07-12 11:02:27,480 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 231 transitions. Word has length 104 [2022-07-12 11:02:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:27,481 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 231 transitions. [2022-07-12 11:02:27,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 11:02:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 231 transitions. [2022-07-12 11:02:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 11:02:27,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:27,481 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:27,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:27,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:27,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -335461550, now seen corresponding path program 1 times [2022-07-12 11:02:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874380722] [2022-07-12 11:02:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:02:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:02:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:27,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874380722] [2022-07-12 11:02:27,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874380722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:27,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:27,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 11:02:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155345061] [2022-07-12 11:02:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:02:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:02:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:02:27,976 INFO L87 Difference]: Start difference. First operand 188 states and 231 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 11:02:28,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:28,434 INFO L93 Difference]: Finished difference Result 202 states and 246 transitions. [2022-07-12 11:02:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:02:28,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2022-07-12 11:02:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:28,436 INFO L225 Difference]: With dead ends: 202 [2022-07-12 11:02:28,436 INFO L226 Difference]: Without dead ends: 200 [2022-07-12 11:02:28,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:02:28,436 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 81 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:28,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 705 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:02:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-12 11:02:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2022-07-12 11:02:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.1159420289855073) internal successors, (154), 144 states have internal predecessors, (154), 39 states have call successors, (39), 16 states have call predecessors, (39), 21 states have return successors, (50), 38 states have call predecessors, (50), 38 states have call successors, (50) [2022-07-12 11:02:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 243 transitions. [2022-07-12 11:02:28,447 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 243 transitions. Word has length 104 [2022-07-12 11:02:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:28,447 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 243 transitions. [2022-07-12 11:02:28,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 11:02:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 243 transitions. [2022-07-12 11:02:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 11:02:28,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:28,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:28,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 11:02:28,448 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:28,448 INFO L85 PathProgramCache]: Analyzing trace with hash 365603028, now seen corresponding path program 1 times [2022-07-12 11:02:28,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:28,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114771933] [2022-07-12 11:02:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:02:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:02:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:28,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114771933] [2022-07-12 11:02:28,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114771933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:28,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:28,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 11:02:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003845646] [2022-07-12 11:02:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:28,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:02:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:02:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:02:28,676 INFO L87 Difference]: Start difference. First operand 199 states and 243 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 11:02:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:29,307 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2022-07-12 11:02:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:02:29,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2022-07-12 11:02:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:29,308 INFO L225 Difference]: With dead ends: 206 [2022-07-12 11:02:29,308 INFO L226 Difference]: Without dead ends: 204 [2022-07-12 11:02:29,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-12 11:02:29,309 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 98 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:29,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 812 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:02:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-12 11:02:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2022-07-12 11:02:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 138 states have internal predecessors, (149), 38 states have call successors, (38), 16 states have call predecessors, (38), 20 states have return successors, (47), 37 states have call predecessors, (47), 37 states have call successors, (47) [2022-07-12 11:02:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2022-07-12 11:02:29,319 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 104 [2022-07-12 11:02:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2022-07-12 11:02:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 11:02:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2022-07-12 11:02:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 11:02:29,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:29,320 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:29,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 11:02:29,320 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 116279649, now seen corresponding path program 1 times [2022-07-12 11:02:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595308295] [2022-07-12 11:02:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:02:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:02:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:29,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595308295] [2022-07-12 11:02:29,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595308295] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960357791] [2022-07-12 11:02:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:29,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:29,694 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:29,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:02:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:30,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 11:02:30,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:30,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 11:02:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 11:02:30,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:02:30,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-12 11:02:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 11:02:30,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960357791] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:02:30,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:02:30,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 13] total 29 [2022-07-12 11:02:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913087064] [2022-07-12 11:02:30,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:02:30,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 11:02:30,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 11:02:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:02:30,757 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 29 states, 27 states have (on average 4.814814814814815) internal successors, (130), 22 states have internal predecessors, (130), 12 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) [2022-07-12 11:02:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:31,807 INFO L93 Difference]: Finished difference Result 356 states and 422 transitions. [2022-07-12 11:02:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 11:02:31,808 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.814814814814815) internal successors, (130), 22 states have internal predecessors, (130), 12 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) Word has length 110 [2022-07-12 11:02:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:31,809 INFO L225 Difference]: With dead ends: 356 [2022-07-12 11:02:31,809 INFO L226 Difference]: Without dead ends: 225 [2022-07-12 11:02:31,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 227 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-07-12 11:02:31,810 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 257 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:31,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 934 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1644 Invalid, 0 Unknown, 198 Unchecked, 0.8s Time] [2022-07-12 11:02:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-07-12 11:02:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 216. [2022-07-12 11:02:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 154 states have (on average 1.1103896103896105) internal successors, (171), 161 states have internal predecessors, (171), 38 states have call successors, (38), 17 states have call predecessors, (38), 23 states have return successors, (46), 37 states have call predecessors, (46), 37 states have call successors, (46) [2022-07-12 11:02:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 255 transitions. [2022-07-12 11:02:31,820 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 255 transitions. Word has length 110 [2022-07-12 11:02:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:31,820 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 255 transitions. [2022-07-12 11:02:31,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.814814814814815) internal successors, (130), 22 states have internal predecessors, (130), 12 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) [2022-07-12 11:02:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 255 transitions. [2022-07-12 11:02:31,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:02:31,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:31,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:31,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:32,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-12 11:02:32,042 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:32,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1502069968, now seen corresponding path program 1 times [2022-07-12 11:02:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:32,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805769969] [2022-07-12 11:02:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:02:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:02:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:02:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 11:02:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:32,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805769969] [2022-07-12 11:02:32,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805769969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:32,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253196566] [2022-07-12 11:02:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:32,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:02:32,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:02:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-12 11:02:33,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:33,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:02:33,272 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:02:33,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:02:33,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:02:33,444 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 11:02:33,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-12 11:02:33,504 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-12 11:02:33,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-12 11:02:39,926 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:39,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 11:02:39,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:02:39,967 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:39,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 11:02:39,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:02:40,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:40,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 11:02:40,018 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-12 11:02:40,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 11:02:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 11:02:46,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:02:46,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253196566] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:46,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:02:46,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 40 [2022-07-12 11:02:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700679668] [2022-07-12 11:02:46,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:02:46,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 11:02:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 11:02:46,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1788, Unknown=9, NotChecked=0, Total=1980 [2022-07-12 11:02:46,801 INFO L87 Difference]: Start difference. First operand 216 states and 255 transitions. Second operand has 40 states, 37 states have (on average 4.027027027027027) internal successors, (149), 35 states have internal predecessors, (149), 14 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2022-07-12 11:02:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:58,634 INFO L93 Difference]: Finished difference Result 329 states and 387 transitions. [2022-07-12 11:02:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 11:02:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 4.027027027027027) internal successors, (149), 35 states have internal predecessors, (149), 14 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 116 [2022-07-12 11:02:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:58,635 INFO L225 Difference]: With dead ends: 329 [2022-07-12 11:02:58,635 INFO L226 Difference]: Without dead ends: 237 [2022-07-12 11:02:58,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 142 SyntacticMatches, 9 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=467, Invalid=4348, Unknown=15, NotChecked=0, Total=4830 [2022-07-12 11:02:58,637 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 256 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1272 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:58,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1054 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1293 Invalid, 0 Unknown, 1272 Unchecked, 0.8s Time] [2022-07-12 11:02:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-12 11:02:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2022-07-12 11:02:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 170 states have (on average 1.1) internal successors, (187), 177 states have internal predecessors, (187), 39 states have call successors, (39), 20 states have call predecessors, (39), 26 states have return successors, (50), 38 states have call predecessors, (50), 38 states have call successors, (50) [2022-07-12 11:02:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 276 transitions. [2022-07-12 11:02:58,648 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 276 transitions. Word has length 116 [2022-07-12 11:02:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:58,648 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 276 transitions. [2022-07-12 11:02:58,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 4.027027027027027) internal successors, (149), 35 states have internal predecessors, (149), 14 states have call successors, (24), 9 states have call predecessors, (24), 11 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2022-07-12 11:02:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 276 transitions. [2022-07-12 11:02:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:02:58,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:58,649 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:58,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 11:02:58,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 11:02:58,859 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash -333479690, now seen corresponding path program 1 times [2022-07-12 11:02:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:58,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846397223] [2022-07-12 11:02:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:02:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:02:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:02:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 11:02:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846397223] [2022-07-12 11:02:59,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846397223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:59,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:59,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 11:02:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077920609] [2022-07-12 11:02:59,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:59,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:02:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:02:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:02:59,372 INFO L87 Difference]: Start difference. First operand 236 states and 276 transitions. Second operand has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 16 states have internal predecessors, (66), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:03:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:00,505 INFO L93 Difference]: Finished difference Result 344 states and 423 transitions. [2022-07-12 11:03:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 11:03:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 16 states have internal predecessors, (66), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 116 [2022-07-12 11:03:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:00,507 INFO L225 Difference]: With dead ends: 344 [2022-07-12 11:03:00,507 INFO L226 Difference]: Without dead ends: 275 [2022-07-12 11:03:00,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:03:00,508 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 215 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 469 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:03:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-12 11:03:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 246. [2022-07-12 11:03:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 177 states have (on average 1.0960451977401129) internal successors, (194), 185 states have internal predecessors, (194), 40 states have call successors, (40), 20 states have call predecessors, (40), 28 states have return successors, (57), 40 states have call predecessors, (57), 39 states have call successors, (57) [2022-07-12 11:03:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 291 transitions. [2022-07-12 11:03:00,522 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 291 transitions. Word has length 116 [2022-07-12 11:03:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:00,523 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 291 transitions. [2022-07-12 11:03:00,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 16 states have internal predecessors, (66), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:03:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 291 transitions. [2022-07-12 11:03:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:03:00,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:00,524 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:00,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 11:03:00,524 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash -75314252, now seen corresponding path program 1 times [2022-07-12 11:03:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:00,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933543329] [2022-07-12 11:03:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:00,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:03:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:03:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:03:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:03:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:03:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:03:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:03:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:03:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 11:03:00,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933543329] [2022-07-12 11:03:00,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933543329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:00,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:03:00,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:03:00,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701906543] [2022-07-12 11:03:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:00,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:03:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:03:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:03:00,743 INFO L87 Difference]: Start difference. First operand 246 states and 291 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:03:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:01,034 INFO L93 Difference]: Finished difference Result 315 states and 375 transitions. [2022-07-12 11:03:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:03:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 116 [2022-07-12 11:03:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:01,045 INFO L225 Difference]: With dead ends: 315 [2022-07-12 11:03:01,045 INFO L226 Difference]: Without dead ends: 239 [2022-07-12 11:03:01,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:03:01,046 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 158 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:01,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 283 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:03:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-12 11:03:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-07-12 11:03:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 171 states have (on average 1.0935672514619883) internal successors, (187), 178 states have internal predecessors, (187), 40 states have call successors, (40), 20 states have call predecessors, (40), 27 states have return successors, (54), 40 states have call predecessors, (54), 39 states have call successors, (54) [2022-07-12 11:03:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 281 transitions. [2022-07-12 11:03:01,058 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 281 transitions. Word has length 116 [2022-07-12 11:03:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:01,058 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 281 transitions. [2022-07-12 11:03:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:03:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 281 transitions. [2022-07-12 11:03:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 11:03:01,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:01,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 11:03:01,059 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash 286245061, now seen corresponding path program 1 times [2022-07-12 11:03:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:01,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178055725] [2022-07-12 11:03:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:03:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:03:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:03:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:03:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:03:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:03:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:03:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:01,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178055725] [2022-07-12 11:03:01,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178055725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:01,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657111455] [2022-07-12 11:03:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:01,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:01,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:01,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:01,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:03:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:01,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-12 11:03:01,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:01,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:03:04,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:03:04,354 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-12 11:03:04,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2022-07-12 11:03:06,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:03:06,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:03:06,567 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:03:06,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 47 [2022-07-12 11:03:16,079 INFO L356 Elim1Store]: treesize reduction 197, result has 31.4 percent of original size [2022-07-12 11:03:16,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 155 [2022-07-12 11:03:16,123 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-07-12 11:03:16,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 82 [2022-07-12 11:03:16,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-07-12 11:03:16,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:03:16,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:03:16,160 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:03:16,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 81 [2022-07-12 11:03:16,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-12 11:03:26,385 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:03:32,586 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:03:40,785 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:03:51,909 INFO L356 Elim1Store]: treesize reduction 197, result has 31.4 percent of original size [2022-07-12 11:03:51,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 155 [2022-07-12 11:03:52,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 11:03:52,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 28 [2022-07-12 11:03:52,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:03:52,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-07-12 11:03:52,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2022-07-12 11:03:52,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2022-07-12 11:03:52,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 11:03:52,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2022-07-12 11:03:52,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 11:03:52,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 11:04:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:04:09,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:11,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657111455] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:11,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:04:11,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30] total 45 [2022-07-12 11:04:11,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904188197] [2022-07-12 11:04:11,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:04:11,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-12 11:04:11,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-12 11:04:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1905, Unknown=20, NotChecked=0, Total=2070 [2022-07-12 11:04:11,566 INFO L87 Difference]: Start difference. First operand 239 states and 281 transitions. Second operand has 45 states, 41 states have (on average 3.4878048780487805) internal successors, (143), 36 states have internal predecessors, (143), 19 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (26), 15 states have call predecessors, (26), 19 states have call successors, (26) [2022-07-12 11:05:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:20,840 INFO L93 Difference]: Finished difference Result 492 states and 610 transitions. [2022-07-12 11:05:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-12 11:05:20,840 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 3.4878048780487805) internal successors, (143), 36 states have internal predecessors, (143), 19 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (26), 15 states have call predecessors, (26), 19 states have call successors, (26) Word has length 117 [2022-07-12 11:05:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:20,842 INFO L225 Difference]: With dead ends: 492 [2022-07-12 11:05:20,842 INFO L226 Difference]: Without dead ends: 343 [2022-07-12 11:05:20,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 142 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 134.6s TimeCoverageRelationStatistics Valid=594, Invalid=6817, Unknown=71, NotChecked=0, Total=7482 [2022-07-12 11:05:20,844 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 509 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 3557 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 5763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1951 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:20,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1893 Invalid, 5763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3557 Invalid, 0 Unknown, 1951 Unchecked, 2.3s Time] [2022-07-12 11:05:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-12 11:05:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 249. [2022-07-12 11:05:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 177 states have (on average 1.0903954802259888) internal successors, (193), 185 states have internal predecessors, (193), 42 states have call successors, (42), 21 states have call predecessors, (42), 29 states have return successors, (56), 42 states have call predecessors, (56), 41 states have call successors, (56) [2022-07-12 11:05:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 291 transitions. [2022-07-12 11:05:20,859 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 291 transitions. Word has length 117 [2022-07-12 11:05:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:20,860 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 291 transitions. [2022-07-12 11:05:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 3.4878048780487805) internal successors, (143), 36 states have internal predecessors, (143), 19 states have call successors, (26), 10 states have call predecessors, (26), 13 states have return successors, (26), 15 states have call predecessors, (26), 19 states have call successors, (26) [2022-07-12 11:05:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 291 transitions. [2022-07-12 11:05:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:05:20,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:20,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:20,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 11:05:21,082 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:21,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1522802117, now seen corresponding path program 1 times [2022-07-12 11:05:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:21,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773359248] [2022-07-12 11:05:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:05:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:05:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:05:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:05:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:05:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 11:05:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773359248] [2022-07-12 11:05:21,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773359248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:21,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:21,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 11:05:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106979558] [2022-07-12 11:05:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:05:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:05:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:05:21,300 INFO L87 Difference]: Start difference. First operand 249 states and 291 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:05:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:21,818 INFO L93 Difference]: Finished difference Result 257 states and 299 transitions. [2022-07-12 11:05:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:05:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2022-07-12 11:05:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:21,820 INFO L225 Difference]: With dead ends: 257 [2022-07-12 11:05:21,820 INFO L226 Difference]: Without dead ends: 255 [2022-07-12 11:05:21,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:05:21,820 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 149 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:21,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 674 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:05:21,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-12 11:05:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2022-07-12 11:05:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 177 states have (on average 1.0903954802259888) internal successors, (193), 185 states have internal predecessors, (193), 42 states have call successors, (42), 21 states have call predecessors, (42), 29 states have return successors, (56), 42 states have call predecessors, (56), 41 states have call successors, (56) [2022-07-12 11:05:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 291 transitions. [2022-07-12 11:05:21,834 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 291 transitions. Word has length 118 [2022-07-12 11:05:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:21,834 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 291 transitions. [2022-07-12 11:05:21,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:05:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 291 transitions. [2022-07-12 11:05:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:05:21,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:21,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 11:05:21,836 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -821737539, now seen corresponding path program 1 times [2022-07-12 11:05:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172919858] [2022-07-12 11:05:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:21,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:05:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:05:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:05:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:05:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:05:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 11:05:22,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:22,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172919858] [2022-07-12 11:05:22,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172919858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:22,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:22,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 11:05:22,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958226306] [2022-07-12 11:05:22,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:22,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 11:05:22,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:22,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 11:05:22,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:05:22,294 INFO L87 Difference]: Start difference. First operand 249 states and 291 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:05:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:23,457 INFO L93 Difference]: Finished difference Result 347 states and 421 transitions. [2022-07-12 11:05:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:05:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 118 [2022-07-12 11:05:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:23,459 INFO L225 Difference]: With dead ends: 347 [2022-07-12 11:05:23,459 INFO L226 Difference]: Without dead ends: 278 [2022-07-12 11:05:23,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-07-12 11:05:23,460 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 195 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 443 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:05:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-12 11:05:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 249. [2022-07-12 11:05:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 177 states have (on average 1.0903954802259888) internal successors, (193), 185 states have internal predecessors, (193), 42 states have call successors, (42), 21 states have call predecessors, (42), 29 states have return successors, (54), 42 states have call predecessors, (54), 41 states have call successors, (54) [2022-07-12 11:05:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 289 transitions. [2022-07-12 11:05:23,473 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 289 transitions. Word has length 118 [2022-07-12 11:05:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:23,474 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 289 transitions. [2022-07-12 11:05:23,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:05:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 289 transitions. [2022-07-12 11:05:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 11:05:23,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:23,475 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:23,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 11:05:23,475 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1722213330, now seen corresponding path program 1 times [2022-07-12 11:05:23,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:23,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56385748] [2022-07-12 11:05:23,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:23,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:05:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:05:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:05:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:05:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:05:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:05:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:05:23,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:23,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56385748] [2022-07-12 11:05:23,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56385748] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:23,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987785712] [2022-07-12 11:05:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:23,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:23,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:23,936 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:23,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:05:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:24,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 90 conjunts are in the unsatisfiable core [2022-07-12 11:05:24,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:24,544 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:05:24,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 11:05:24,589 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:05:24,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-07-12 11:05:24,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-12 11:05:24,714 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:05:24,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2022-07-12 11:05:24,795 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-12 11:05:24,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 61 [2022-07-12 11:05:30,684 INFO L356 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-07-12 11:05:30,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 107 [2022-07-12 11:05:30,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:05:30,713 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-07-12 11:05:30,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 54 [2022-07-12 11:05:30,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-07-12 11:05:30,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:30,737 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:05:30,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2022-07-12 11:05:30,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-07-12 11:05:32,810 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2| Int)) (let ((.cse0 (select |c_#memory_int| |v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2|))) (= (select .cse0 8) (select .cse0 0)))) (exists ((|v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2| Int)) (and (<= 1 (let ((.cse1 (select (select |c_#memory_int| |v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2|) 0))) (+ (* 18446744073709551616 (div (+ 18446744073709551615 (* (- 1) .cse1)) 18446744073709551616)) .cse1))) (exists ((|v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_19| Int) (|v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_19| Int)) (and (= (select (select |c_#memory_int| |v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_19|) |v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_19|) (select (select |c_#memory_int| |v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2|) 0)) (not (= |v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2| |v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_19|)))))) (exists ((|v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2| Int)) (and (<= 1 (let ((.cse2 (select (select |c_#memory_int| |v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2|) 0))) (+ (* 18446744073709551616 (div (+ 18446744073709551615 (* (- 1) .cse2)) 18446744073709551616)) .cse2))) (exists ((|v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_19| Int) (|v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_19| Int)) (and (= (select (select |c_#memory_int| |v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_19|) |v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_19|) (select (select |c_#memory_int| |v_aws_byte_cursor_from_buf_~#cur~0.base_BEFORE_CALL_2|) 0)) (not (= 8 |v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_19|))))))) is different from true [2022-07-12 11:05:40,120 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 44 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:05:44,503 INFO L356 Elim1Store]: treesize reduction 122, result has 0.8 percent of original size [2022-07-12 11:05:44,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 74 [2022-07-12 11:05:44,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:05:44,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-07-12 11:05:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 11:05:48,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:53,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987785712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:53,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:05:53,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 34 [2022-07-12 11:05:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364688949] [2022-07-12 11:05:53,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:53,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-12 11:05:53,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-12 11:05:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1007, Unknown=8, NotChecked=64, Total=1190 [2022-07-12 11:05:53,035 INFO L87 Difference]: Start difference. First operand 249 states and 289 transitions. Second operand has 34 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 14 states have call successors, (23), 10 states have call predecessors, (23), 11 states have return successors, (22), 9 states have call predecessors, (22), 14 states have call successors, (22) [2022-07-12 11:06:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:05,834 INFO L93 Difference]: Finished difference Result 433 states and 504 transitions. [2022-07-12 11:06:05,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 11:06:05,834 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 14 states have call successors, (23), 10 states have call predecessors, (23), 11 states have return successors, (22), 9 states have call predecessors, (22), 14 states have call successors, (22) Word has length 123 [2022-07-12 11:06:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:05,836 INFO L225 Difference]: With dead ends: 433 [2022-07-12 11:06:05,836 INFO L226 Difference]: Without dead ends: 276 [2022-07-12 11:06:05,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 149 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=273, Invalid=2371, Unknown=12, NotChecked=100, Total=2756 [2022-07-12 11:06:05,837 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 245 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1371 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:05,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 934 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1356 Invalid, 0 Unknown, 1371 Unchecked, 0.9s Time] [2022-07-12 11:06:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-12 11:06:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 239. [2022-07-12 11:06:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 175 states have (on average 1.0857142857142856) internal successors, (190), 180 states have internal predecessors, (190), 36 states have call successors, (36), 23 states have call predecessors, (36), 27 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-12 11:06:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 267 transitions. [2022-07-12 11:06:05,851 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 267 transitions. Word has length 123 [2022-07-12 11:06:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:05,851 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 267 transitions. [2022-07-12 11:06:05,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 14 states have call successors, (23), 10 states have call predecessors, (23), 11 states have return successors, (22), 9 states have call predecessors, (22), 14 states have call successors, (22) [2022-07-12 11:06:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 267 transitions. [2022-07-12 11:06:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 11:06:05,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:05,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:05,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 11:06:06,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-12 11:06:06,067 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash -706686607, now seen corresponding path program 1 times [2022-07-12 11:06:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:06,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853427506] [2022-07-12 11:06:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:06,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:06:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:06:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:06:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:06:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:06:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:06:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:06:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 11:06:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:06,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853427506] [2022-07-12 11:06:06,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853427506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:06,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:06,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:06:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682414823] [2022-07-12 11:06:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:06:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:06:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:06:06,269 INFO L87 Difference]: Start difference. First operand 239 states and 267 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 11:06:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:06,578 INFO L93 Difference]: Finished difference Result 286 states and 324 transitions. [2022-07-12 11:06:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:06:06,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-12 11:06:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:06,580 INFO L225 Difference]: With dead ends: 286 [2022-07-12 11:06:06,580 INFO L226 Difference]: Without dead ends: 239 [2022-07-12 11:06:06,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:06:06,580 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 91 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:06,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 342 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:06:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-12 11:06:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-07-12 11:06:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 175 states have (on average 1.08) internal successors, (189), 180 states have internal predecessors, (189), 36 states have call successors, (36), 23 states have call predecessors, (36), 27 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-12 11:06:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 266 transitions. [2022-07-12 11:06:06,593 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 266 transitions. Word has length 130 [2022-07-12 11:06:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:06,593 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 266 transitions. [2022-07-12 11:06:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 11:06:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 266 transitions. [2022-07-12 11:06:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 11:06:06,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:06,594 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:06,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 11:06:06,595 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2040989381, now seen corresponding path program 1 times [2022-07-12 11:06:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:06,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545711555] [2022-07-12 11:06:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:06:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:06:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:06:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:06:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:06:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-12 11:06:06,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:06,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545711555] [2022-07-12 11:06:06,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545711555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:06,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:06,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:06:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603368152] [2022-07-12 11:06:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:06,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:06:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:06:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:06:06,845 INFO L87 Difference]: Start difference. First operand 239 states and 266 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 11:06:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:07,213 INFO L93 Difference]: Finished difference Result 364 states and 412 transitions. [2022-07-12 11:06:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:06:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-07-12 11:06:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:07,214 INFO L225 Difference]: With dead ends: 364 [2022-07-12 11:06:07,214 INFO L226 Difference]: Without dead ends: 239 [2022-07-12 11:06:07,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:07,215 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 74 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 303 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:06:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-12 11:06:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-07-12 11:06:07,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 175 states have (on average 1.0742857142857143) internal successors, (188), 180 states have internal predecessors, (188), 36 states have call successors, (36), 23 states have call predecessors, (36), 27 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-12 11:06:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 265 transitions. [2022-07-12 11:06:07,227 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 265 transitions. Word has length 129 [2022-07-12 11:06:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:07,227 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 265 transitions. [2022-07-12 11:06:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 11:06:07,227 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 265 transitions. [2022-07-12 11:06:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 11:06:07,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:07,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:07,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 11:06:07,228 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1646622595, now seen corresponding path program 1 times [2022-07-12 11:06:07,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:07,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975802210] [2022-07-12 11:06:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:07,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:06:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:06:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:06:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:06:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:06:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 11:06:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:07,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975802210] [2022-07-12 11:06:07,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975802210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:07,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:07,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 11:06:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570029126] [2022-07-12 11:06:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 11:06:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 11:06:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:06:07,741 INFO L87 Difference]: Start difference. First operand 239 states and 265 transitions. Second operand has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-12 11:06:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:08,925 INFO L93 Difference]: Finished difference Result 349 states and 404 transitions. [2022-07-12 11:06:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:06:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 129 [2022-07-12 11:06:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:08,927 INFO L225 Difference]: With dead ends: 349 [2022-07-12 11:06:08,927 INFO L226 Difference]: Without dead ends: 261 [2022-07-12 11:06:08,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:06:08,928 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 218 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:08,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 825 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:06:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-12 11:06:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 233. [2022-07-12 11:06:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 170 states have (on average 1.0647058823529412) internal successors, (181), 174 states have internal predecessors, (181), 36 states have call successors, (36), 23 states have call predecessors, (36), 26 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-12 11:06:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 257 transitions. [2022-07-12 11:06:08,941 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 257 transitions. Word has length 129 [2022-07-12 11:06:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:08,942 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 257 transitions. [2022-07-12 11:06:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 6 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-12 11:06:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 257 transitions. [2022-07-12 11:06:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 11:06:08,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:08,943 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:08,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 11:06:08,943 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:08,944 INFO L85 PathProgramCache]: Analyzing trace with hash 366758917, now seen corresponding path program 1 times [2022-07-12 11:06:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:08,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099147778] [2022-07-12 11:06:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:08,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:06:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:06:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:06:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:06:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:06:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 11:06:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:09,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099147778] [2022-07-12 11:06:09,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099147778] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:09,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86900080] [2022-07-12 11:06:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:09,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:09,880 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:06:09,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:06:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:10,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-12 11:06:10,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:10,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:06:10,583 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:06:10,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:06:10,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:06:11,285 INFO L356 Elim1Store]: treesize reduction 152, result has 22.8 percent of original size [2022-07-12 11:06:11,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 39 treesize of output 69 [2022-07-12 11:06:11,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 11:06:11,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 11:06:11,812 INFO L356 Elim1Store]: treesize reduction 72, result has 22.6 percent of original size [2022-07-12 11:06:11,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 38 [2022-07-12 11:06:11,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:06:11,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:06:12,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:06:12,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 11:06:12,031 INFO L356 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2022-07-12 11:06:12,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 32 [2022-07-12 11:06:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 37 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 11:06:18,382 INFO L328 TraceCheckSpWp]: Computing backward predicates...