./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_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_buf_write_be64_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 e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:56:57,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:56:57,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:56:58,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:56:58,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:56:58,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:56:58,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:56:58,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:56:58,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:56:58,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:56:58,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:56:58,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:56:58,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:56:58,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:56:58,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:56:58,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:56:58,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:56:58,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:56:58,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:56:58,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:56:58,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:56:58,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:56:58,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:56:58,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:56:58,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:56:58,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:56:58,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:56:58,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:56:58,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:56:58,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:56:58,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:56:58,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:56:58,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:56:58,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:56:58,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:56:58,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:56:58,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:56:58,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:56:58,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:56:58,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:56:58,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:56:58,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:56:58,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:56:58,101 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:56:58,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:56:58,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:56:58,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:56:58,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:56:58,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:56:58,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:56:58,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:56:58,104 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:56:58,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:56:58,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:56:58,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:56:58,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:56:58,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:56:58,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:56:58,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:56:58,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:56:58,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:56:58,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:56:58,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:56:58,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:56:58,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:56:58,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:56:58,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:56:58,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:56:58,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:56:58,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:56:58,110 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:56:58,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:56:58,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:56:58,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2022-07-12 10:56:58,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:56:58,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:56:58,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:56:58,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:56:58,379 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:56:58,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2022-07-12 10:56:58,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d7793b3/c8143137ea784c808f54008b331b7284/FLAGbbf92f16d [2022-07-12 10:56:59,166 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:56:59,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2022-07-12 10:56:59,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d7793b3/c8143137ea784c808f54008b331b7284/FLAGbbf92f16d [2022-07-12 10:56:59,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d7793b3/c8143137ea784c808f54008b331b7284 [2022-07-12 10:56:59,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:56:59,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:56:59,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:56:59,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:56:59,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:56:59,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:56:59" (1/1) ... [2022-07-12 10:56:59,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f94b00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:59, skipping insertion in model container [2022-07-12 10:56:59,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:56:59" (1/1) ... [2022-07-12 10:56:59,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:56:59,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:56:59,801 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_buf_write_be64_harness.i[4497,4510] [2022-07-12 10:56:59,809 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_buf_write_be64_harness.i[4557,4570] [2022-07-12 10:57:00,436 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,437 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,437 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,438 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,439 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:57:00,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:57:00,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:57:00,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:57:00,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:57:00,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:57:00,705 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:57:00,705 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:57:00,706 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:57:00,707 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:57:00,815 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:57:00,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:00,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:57:01,043 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:57:01,054 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_buf_write_be64_harness.i[4497,4510] [2022-07-12 10:57:01,055 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_buf_write_be64_harness.i[4557,4570] [2022-07-12 10:57:01,096 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,098 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,103 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,103 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,104 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,104 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,127 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:57:01,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:57:01,128 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:57:01,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:57:01,130 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:57:01,130 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:57:01,131 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:57:01,131 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:57:01,131 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:57:01,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:57:01,150 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:57:01,223 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,225 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:57:01,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:57:01,503 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:57:01,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01 WrapperNode [2022-07-12 10:57:01,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:57:01,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:57:01,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:57:01,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:57:01,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,658 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2022-07-12 10:57:01,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:57:01,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:57:01,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:57:01,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:57:01,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:57:01,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:57:01,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:57:01,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:57:01,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (1/1) ... [2022-07-12 10:57:01,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:57:01,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:01,808 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 10:57:01,839 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 10:57:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-07-12 10:57:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2022-07-12 10:57:01,854 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2022-07-12 10:57:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:57:01,854 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:57:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:57:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:57:01,855 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:57:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:57:01,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:57:01,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:57:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:57:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:57:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:57:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:57:01,858 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:57:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:57:01,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:57:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:57:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:57:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:57:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:57:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:57:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:57:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:57:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:57:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:57:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:57:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-12 10:57:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-12 10:57:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:57:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:57:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:57:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:57:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2022-07-12 10:57:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2022-07-12 10:57:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:57:02,155 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:57:02,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:57:03,199 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:57:03,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:57:03,206 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:57:03,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:57:03 BoogieIcfgContainer [2022-07-12 10:57:03,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:57:03,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:57:03,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:57:03,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:57:03,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:56:59" (1/3) ... [2022-07-12 10:57:03,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b927c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:57:03, skipping insertion in model container [2022-07-12 10:57:03,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:57:01" (2/3) ... [2022-07-12 10:57:03,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b927c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:57:03, skipping insertion in model container [2022-07-12 10:57:03,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:57:03" (3/3) ... [2022-07-12 10:57:03,214 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2022-07-12 10:57:03,226 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:57:03,226 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:57:03,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:57:03,278 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@28b74d65, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1632bb35 [2022-07-12 10:57:03,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:57:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-12 10:57:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 10:57:03,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:03,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:03,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:03,299 INFO L85 PathProgramCache]: Analyzing trace with hash -598164550, now seen corresponding path program 1 times [2022-07-12 10:57:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:03,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263362154] [2022-07-12 10:57:03,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 10:57:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 10:57:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 10:57:04,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:04,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263362154] [2022-07-12 10:57:04,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263362154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:04,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:04,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:57:04,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986874968] [2022-07-12 10:57:04,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:04,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:57:04,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:57:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:57:04,148 INFO L87 Difference]: Start difference. First operand has 142 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:04,416 INFO L93 Difference]: Finished difference Result 280 states and 391 transitions. [2022-07-12 10:57:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:57:04,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2022-07-12 10:57:04,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:04,431 INFO L225 Difference]: With dead ends: 280 [2022-07-12 10:57:04,431 INFO L226 Difference]: Without dead ends: 137 [2022-07-12 10:57:04,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 10:57:04,447 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 63 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:04,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 207 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:57:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-12 10:57:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-12 10:57:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-12 10:57:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2022-07-12 10:57:04,509 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 96 [2022-07-12 10:57:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:04,510 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2022-07-12 10:57:04,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2022-07-12 10:57:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 10:57:04,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:04,520 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:04,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:57:04,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1705408322, now seen corresponding path program 1 times [2022-07-12 10:57:04,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:04,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324680413] [2022-07-12 10:57:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:04,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 10:57:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 10:57:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:04,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:04,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324680413] [2022-07-12 10:57:04,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324680413] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:04,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657578157] [2022-07-12 10:57:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:04,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:04,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:04,994 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 10:57:04,995 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 10:57:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:05,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:57:05,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:57:05,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:05,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657578157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:05,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:05,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 10:57:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772732888] [2022-07-12 10:57:05,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:05,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:57:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:57:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:57:05,627 INFO L87 Difference]: Start difference. First operand 137 states and 177 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:57:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:05,790 INFO L93 Difference]: Finished difference Result 252 states and 333 transitions. [2022-07-12 10:57:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:57:05,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 96 [2022-07-12 10:57:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:05,793 INFO L225 Difference]: With dead ends: 252 [2022-07-12 10:57:05,793 INFO L226 Difference]: Without dead ends: 140 [2022-07-12 10:57:05,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 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 10:57:05,795 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 205 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:05,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 389 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-12 10:57:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-12 10:57:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2022-07-12 10:57:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2022-07-12 10:57:05,825 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 96 [2022-07-12 10:57:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:05,826 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2022-07-12 10:57:05,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:57:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2022-07-12 10:57:05,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 10:57:05,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:05,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:05,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:06,059 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 10:57:06,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 870874419, now seen corresponding path program 1 times [2022-07-12 10:57:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:06,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675980712] [2022-07-12 10:57:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 10:57:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:06,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:06,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675980712] [2022-07-12 10:57:06,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675980712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:06,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384945647] [2022-07-12 10:57:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:06,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:06,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:06,447 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 10:57:06,458 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 10:57:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:06,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:57:06,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 10:57:07,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:07,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384945647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:07,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:07,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-12 10:57:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411849589] [2022-07-12 10:57:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:07,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:57:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:57:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:57:07,072 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 10:57:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:07,256 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2022-07-12 10:57:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:57:07,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 102 [2022-07-12 10:57:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:07,259 INFO L225 Difference]: With dead ends: 247 [2022-07-12 10:57:07,259 INFO L226 Difference]: Without dead ends: 140 [2022-07-12 10:57:07,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:57:07,261 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 222 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:07,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 509 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-12 10:57:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-07-12 10:57:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-07-12 10:57:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2022-07-12 10:57:07,287 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 102 [2022-07-12 10:57:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:07,288 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2022-07-12 10:57:07,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 10:57:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2022-07-12 10:57:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 10:57:07,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:07,291 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2022-07-12 10:57:07,319 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 10:57:07,491 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 10:57:07,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:07,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1336541160, now seen corresponding path program 2 times [2022-07-12 10:57:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:07,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060127378] [2022-07-12 10:57:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:07,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:57:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:57:07,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:07,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060127378] [2022-07-12 10:57:07,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060127378] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:07,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050420237] [2022-07-12 10:57:07,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:07,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:07,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:07,877 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 10:57:07,907 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 10:57:08,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:08,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:08,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 10:57:08,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:57:08,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:08,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050420237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:08,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:08,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-12 10:57:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006072606] [2022-07-12 10:57:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:08,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:57:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:57:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:57:08,751 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 10:57:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:08,890 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2022-07-12 10:57:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:57:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 108 [2022-07-12 10:57:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:08,894 INFO L225 Difference]: With dead ends: 231 [2022-07-12 10:57:08,895 INFO L226 Difference]: Without dead ends: 137 [2022-07-12 10:57:08,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:57:08,900 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 80 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:08,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 970 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-12 10:57:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-12 10:57:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-12 10:57:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2022-07-12 10:57:08,929 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 108 [2022-07-12 10:57:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:08,930 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2022-07-12 10:57:08,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 10:57:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2022-07-12 10:57:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 10:57:08,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:08,931 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:08,963 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 10:57:09,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:09,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1211043646, now seen corresponding path program 1 times [2022-07-12 10:57:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893301690] [2022-07-12 10:57:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:57:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 10:57:09,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:09,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893301690] [2022-07-12 10:57:09,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893301690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:09,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:09,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:57:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608347955] [2022-07-12 10:57:09,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:09,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:09,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:57:09,566 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:57:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:10,128 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2022-07-12 10:57:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:10,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2022-07-12 10:57:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:10,130 INFO L225 Difference]: With dead ends: 149 [2022-07-12 10:57:10,130 INFO L226 Difference]: Without dead ends: 147 [2022-07-12 10:57:10,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:57:10,131 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 89 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:10,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 600 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:57:10,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-12 10:57:10,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2022-07-12 10:57:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 96 states have internal predecessors, (111), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2022-07-12 10:57:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2022-07-12 10:57:10,145 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 120 [2022-07-12 10:57:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:10,145 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2022-07-12 10:57:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:57:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2022-07-12 10:57:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 10:57:10,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:10,148 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:10,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:57:10,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:10,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1628651524, now seen corresponding path program 1 times [2022-07-12 10:57:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:10,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785857739] [2022-07-12 10:57:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:10,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:57:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-12 10:57:10,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:10,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785857739] [2022-07-12 10:57:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785857739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:10,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:10,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:57:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246760502] [2022-07-12 10:57:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:10,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:57:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:57:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:57:10,692 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:57:11,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:11,427 INFO L93 Difference]: Finished difference Result 236 states and 320 transitions. [2022-07-12 10:57:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:57:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2022-07-12 10:57:11,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:11,433 INFO L225 Difference]: With dead ends: 236 [2022-07-12 10:57:11,433 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 10:57:11,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:57:11,434 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 173 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:11,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 541 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 10:57:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 10:57:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2022-07-12 10:57:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 109 states have (on average 1.201834862385321) internal successors, (131), 114 states have internal predecessors, (131), 38 states have call successors, (38), 13 states have call predecessors, (38), 16 states have return successors, (56), 36 states have call predecessors, (56), 37 states have call successors, (56) [2022-07-12 10:57:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2022-07-12 10:57:11,459 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 124 [2022-07-12 10:57:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:11,461 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2022-07-12 10:57:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:57:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2022-07-12 10:57:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 10:57:11,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:11,463 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:11,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:57:11,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash 348787846, now seen corresponding path program 1 times [2022-07-12 10:57:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:11,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410807440] [2022-07-12 10:57:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:57:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-12 10:57:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:12,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410807440] [2022-07-12 10:57:12,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410807440] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:12,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412784506] [2022-07-12 10:57:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:12,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:12,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:12,016 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 10:57:12,045 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 10:57:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:12,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 10:57:12,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:12,612 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 13 treesize of output 9 [2022-07-12 10:57:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 10:57:12,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:12,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412784506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:12,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:12,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-12 10:57:12,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170256202] [2022-07-12 10:57:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:12,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:57:12,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:57:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:57:12,877 INFO L87 Difference]: Start difference. First operand 164 states and 225 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-12 10:57:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:13,012 INFO L93 Difference]: Finished difference Result 320 states and 437 transitions. [2022-07-12 10:57:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:57:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 124 [2022-07-12 10:57:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:13,014 INFO L225 Difference]: With dead ends: 320 [2022-07-12 10:57:13,015 INFO L226 Difference]: Without dead ends: 177 [2022-07-12 10:57:13,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:57:13,016 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 32 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:13,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1117 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-07-12 10:57:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-12 10:57:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-07-12 10:57:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 126 states have internal predecessors, (146), 38 states have call successors, (38), 14 states have call predecessors, (38), 17 states have return successors, (55), 36 states have call predecessors, (55), 37 states have call successors, (55) [2022-07-12 10:57:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2022-07-12 10:57:13,030 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 124 [2022-07-12 10:57:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:13,031 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2022-07-12 10:57:13,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-12 10:57:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2022-07-12 10:57:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 10:57:13,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:13,033 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:13,062 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 10:57:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:13,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash 320287556, now seen corresponding path program 2 times [2022-07-12 10:57:13,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:13,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522558510] [2022-07-12 10:57:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:57:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 10:57:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:57:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:57:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-12 10:57:13,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522558510] [2022-07-12 10:57:13,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522558510] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279413839] [2022-07-12 10:57:13,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:13,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:13,484 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 10:57:13,485 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 10:57:14,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:14,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:14,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:14,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 10:57:14,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:14,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279413839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:14,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:14,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:57:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956912499] [2022-07-12 10:57:14,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:14,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:14,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:14,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:14,345 INFO L87 Difference]: Start difference. First operand 177 states and 239 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:14,371 INFO L93 Difference]: Finished difference Result 312 states and 430 transitions. [2022-07-12 10:57:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:14,372 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2022-07-12 10:57:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:14,373 INFO L225 Difference]: With dead ends: 312 [2022-07-12 10:57:14,373 INFO L226 Difference]: Without dead ends: 169 [2022-07-12 10:57:14,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 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 10:57:14,375 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 20 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:14,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 520 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-12 10:57:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2022-07-12 10:57:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 116 states have internal predecessors, (136), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (48), 36 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-12 10:57:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 222 transitions. [2022-07-12 10:57:14,392 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 222 transitions. Word has length 124 [2022-07-12 10:57:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:14,392 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 222 transitions. [2022-07-12 10:57:14,392 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 222 transitions. [2022-07-12 10:57:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 10:57:14,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:14,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:57:14,424 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 10:57:14,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:14,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1892680832, now seen corresponding path program 3 times [2022-07-12 10:57:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:14,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592228389] [2022-07-12 10:57:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:14,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:57:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:57:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:57:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:57:14,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592228389] [2022-07-12 10:57:14,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592228389] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86594832] [2022-07-12 10:57:14,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:14,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:14,993 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 10:57:14,999 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 10:57:15,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:57:15,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:15,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:57:15,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:57:16,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:16,577 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:57:16,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-12 10:57:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:57:16,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86594832] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:16,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:16,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-12 10:57:16,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905582306] [2022-07-12 10:57:16,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:16,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:57:16,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:57:16,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:57:16,620 INFO L87 Difference]: Start difference. First operand 167 states and 222 transitions. Second operand has 26 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 4 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-12 10:57:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:19,048 INFO L93 Difference]: Finished difference Result 401 states and 559 transitions. [2022-07-12 10:57:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 10:57:19,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 4 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 128 [2022-07-12 10:57:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:19,051 INFO L225 Difference]: With dead ends: 401 [2022-07-12 10:57:19,051 INFO L226 Difference]: Without dead ends: 266 [2022-07-12 10:57:19,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 270 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=511, Invalid=3029, Unknown=0, NotChecked=0, Total=3540 [2022-07-12 10:57:19,054 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 354 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:19,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1182 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2299 Invalid, 0 Unknown, 357 Unchecked, 1.5s Time] [2022-07-12 10:57:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-12 10:57:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 215. [2022-07-12 10:57:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 159 states have internal predecessors, (184), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (67), 39 states have call predecessors, (67), 41 states have call successors, (67) [2022-07-12 10:57:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 293 transitions. [2022-07-12 10:57:19,070 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 293 transitions. Word has length 128 [2022-07-12 10:57:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:19,070 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 293 transitions. [2022-07-12 10:57:19,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 4 states have call successors, (30), 4 states have call predecessors, (30), 7 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-12 10:57:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 293 transitions. [2022-07-12 10:57:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:19,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:19,073 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:19,100 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 10:57:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:19,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash -793075011, now seen corresponding path program 1 times [2022-07-12 10:57:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444203842] [2022-07-12 10:57:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 10:57:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444203842] [2022-07-12 10:57:19,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444203842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13531061] [2022-07-12 10:57:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:19,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:19,510 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 10:57:19,511 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 10:57:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:19,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:19,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-12 10:57:19,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:19,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13531061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:19,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:19,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:57:19,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088894989] [2022-07-12 10:57:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:19,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:19,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:19,991 INFO L87 Difference]: Start difference. First operand 215 states and 293 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:20,020 INFO L93 Difference]: Finished difference Result 416 states and 585 transitions. [2022-07-12 10:57:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-12 10:57:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:20,022 INFO L225 Difference]: With dead ends: 416 [2022-07-12 10:57:20,022 INFO L226 Difference]: Without dead ends: 233 [2022-07-12 10:57:20,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 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 10:57:20,024 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 9 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:20,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-12 10:57:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 221. [2022-07-12 10:57:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 158 states have (on average 1.2025316455696202) internal successors, (190), 165 states have internal predecessors, (190), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (67), 39 states have call predecessors, (67), 41 states have call successors, (67) [2022-07-12 10:57:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 299 transitions. [2022-07-12 10:57:20,048 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 299 transitions. Word has length 130 [2022-07-12 10:57:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:20,049 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 299 transitions. [2022-07-12 10:57:20,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 299 transitions. [2022-07-12 10:57:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:20,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:20,051 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:20,087 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 10:57:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:20,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2144460229, now seen corresponding path program 1 times [2022-07-12 10:57:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087421888] [2022-07-12 10:57:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-12 10:57:20,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:20,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087421888] [2022-07-12 10:57:20,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087421888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:20,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:20,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:57:20,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394268262] [2022-07-12 10:57:20,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:20,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:57:20,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:57:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:57:20,606 INFO L87 Difference]: Start difference. First operand 221 states and 299 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:57:20,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:20,997 INFO L93 Difference]: Finished difference Result 444 states and 635 transitions. [2022-07-12 10:57:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:57:20,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 130 [2022-07-12 10:57:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:21,000 INFO L225 Difference]: With dead ends: 444 [2022-07-12 10:57:21,000 INFO L226 Difference]: Without dead ends: 263 [2022-07-12 10:57:21,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:57:21,002 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 91 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:21,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 334 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:57:21,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-12 10:57:21,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 235. [2022-07-12 10:57:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 171 states have (on average 1.1988304093567252) internal successors, (205), 179 states have internal predecessors, (205), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (72), 39 states have call predecessors, (72), 41 states have call successors, (72) [2022-07-12 10:57:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 319 transitions. [2022-07-12 10:57:21,021 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 319 transitions. Word has length 130 [2022-07-12 10:57:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:21,022 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 319 transitions. [2022-07-12 10:57:21,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:57:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 319 transitions. [2022-07-12 10:57:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:21,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:21,025 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:57:21,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1892341629, now seen corresponding path program 1 times [2022-07-12 10:57:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332806494] [2022-07-12 10:57:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-12 10:57:21,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332806494] [2022-07-12 10:57:21,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332806494] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:21,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851728987] [2022-07-12 10:57:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:21,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:21,434 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 10:57:21,465 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 10:57:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:21,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:57:21,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:57:22,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:22,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851728987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:22,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:22,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-12 10:57:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205715819] [2022-07-12 10:57:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:22,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:57:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:57:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:57:22,016 INFO L87 Difference]: Start difference. First operand 235 states and 319 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:22,160 INFO L93 Difference]: Finished difference Result 444 states and 641 transitions. [2022-07-12 10:57:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:22,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-12 10:57:22,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:22,162 INFO L225 Difference]: With dead ends: 444 [2022-07-12 10:57:22,162 INFO L226 Difference]: Without dead ends: 241 [2022-07-12 10:57:22,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:57:22,164 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 33 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:22,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 593 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-07-12 10:57:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-12 10:57:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 231. [2022-07-12 10:57:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 167 states have (on average 1.1796407185628743) internal successors, (197), 175 states have internal predecessors, (197), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (72), 39 states have call predecessors, (72), 41 states have call successors, (72) [2022-07-12 10:57:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 311 transitions. [2022-07-12 10:57:22,178 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 311 transitions. Word has length 130 [2022-07-12 10:57:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:22,179 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 311 transitions. [2022-07-12 10:57:22,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 311 transitions. [2022-07-12 10:57:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:22,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:22,182 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:57:22,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:22,407 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,SelfDestructingSolverStorable11 [2022-07-12 10:57:22,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:22,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -505128901, now seen corresponding path program 2 times [2022-07-12 10:57:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:22,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366079090] [2022-07-12 10:57:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:57:22,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:22,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366079090] [2022-07-12 10:57:22,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366079090] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:22,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268332310] [2022-07-12 10:57:22,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:22,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:22,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:22,633 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 10:57:22,655 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 10:57:23,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:23,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:23,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:57:23,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 10:57:23,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:23,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268332310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:23,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:23,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:57:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177799609] [2022-07-12 10:57:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:57:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:57:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:23,134 INFO L87 Difference]: Start difference. First operand 231 states and 311 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:23,165 INFO L93 Difference]: Finished difference Result 411 states and 571 transitions. [2022-07-12 10:57:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:23,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-12 10:57:23,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:23,167 INFO L225 Difference]: With dead ends: 411 [2022-07-12 10:57:23,168 INFO L226 Difference]: Without dead ends: 210 [2022-07-12 10:57:23,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 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 10:57:23,170 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 32 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:23,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:57:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-12 10:57:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2022-07-12 10:57:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 144 states have (on average 1.1597222222222223) internal successors, (167), 149 states have internal predecessors, (167), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (59), 39 states have call predecessors, (59), 41 states have call successors, (59) [2022-07-12 10:57:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 268 transitions. [2022-07-12 10:57:23,182 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 268 transitions. Word has length 130 [2022-07-12 10:57:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:23,183 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-07-12 10:57:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 268 transitions. [2022-07-12 10:57:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:23,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:23,185 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-07-12 10:57:23,215 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 10:57:23,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:57:23,399 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1883435129, now seen corresponding path program 3 times [2022-07-12 10:57:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:23,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113081712] [2022-07-12 10:57:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:23,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 10:57:23,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:23,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113081712] [2022-07-12 10:57:23,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113081712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:23,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323001232] [2022-07-12 10:57:23,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:23,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:23,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:23,877 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 10:57:23,879 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 10:57:24,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:57:24,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:24,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:57:24,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:57:36,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:37,048 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:57:37,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 10:57:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:57:37,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323001232] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:57:37,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:57:37,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 23 [2022-07-12 10:57:37,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578916340] [2022-07-12 10:57:37,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:57:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:57:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=427, Unknown=2, NotChecked=0, Total=506 [2022-07-12 10:57:37,086 INFO L87 Difference]: Start difference. First operand 205 states and 268 transitions. Second operand has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 10:57:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:43,077 INFO L93 Difference]: Finished difference Result 413 states and 546 transitions. [2022-07-12 10:57:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 10:57:43,078 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 130 [2022-07-12 10:57:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:43,080 INFO L225 Difference]: With dead ends: 413 [2022-07-12 10:57:43,080 INFO L226 Difference]: Without dead ends: 254 [2022-07-12 10:57:43,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 276 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=383, Invalid=2065, Unknown=2, NotChecked=0, Total=2450 [2022-07-12 10:57:43,082 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 316 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:43,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 911 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1776 Invalid, 0 Unknown, 302 Unchecked, 1.3s Time] [2022-07-12 10:57:43,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-12 10:57:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 210. [2022-07-12 10:57:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.1448275862068966) internal successors, (166), 149 states have internal predecessors, (166), 45 states have call successors, (45), 18 states have call predecessors, (45), 19 states have return successors, (69), 42 states have call predecessors, (69), 44 states have call successors, (69) [2022-07-12 10:57:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 280 transitions. [2022-07-12 10:57:43,095 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 280 transitions. Word has length 130 [2022-07-12 10:57:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:43,096 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 280 transitions. [2022-07-12 10:57:43,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 10:57:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 280 transitions. [2022-07-12 10:57:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:43,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:43,098 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:43,128 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 10:57:43,319 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,SelfDestructingSolverStorable13 [2022-07-12 10:57:43,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 933699569, now seen corresponding path program 1 times [2022-07-12 10:57:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:43,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439658025] [2022-07-12 10:57:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:43,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-12 10:57:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:43,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439658025] [2022-07-12 10:57:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439658025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:43,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:43,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:57:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697176778] [2022-07-12 10:57:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:43,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:57:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:57:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:43,707 INFO L87 Difference]: Start difference. First operand 210 states and 280 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:43,987 INFO L93 Difference]: Finished difference Result 374 states and 500 transitions. [2022-07-12 10:57:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:57:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-12 10:57:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:43,989 INFO L225 Difference]: With dead ends: 374 [2022-07-12 10:57:43,989 INFO L226 Difference]: Without dead ends: 210 [2022-07-12 10:57:43,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:57:43,993 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 62 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:43,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 321 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:57:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-12 10:57:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-07-12 10:57:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 149 states have internal predecessors, (165), 45 states have call successors, (45), 18 states have call predecessors, (45), 19 states have return successors, (69), 42 states have call predecessors, (69), 44 states have call successors, (69) [2022-07-12 10:57:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 279 transitions. [2022-07-12 10:57:44,005 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 279 transitions. Word has length 130 [2022-07-12 10:57:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:44,005 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 279 transitions. [2022-07-12 10:57:44,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 10:57:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 279 transitions. [2022-07-12 10:57:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:44,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:44,007 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:44,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:57:44,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:44,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1702869584, now seen corresponding path program 1 times [2022-07-12 10:57:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:44,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83835827] [2022-07-12 10:57:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:44,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 10:57:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:44,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83835827] [2022-07-12 10:57:44,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83835827] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:44,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509212915] [2022-07-12 10:57:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:44,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:44,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:44,641 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 10:57:44,667 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 10:57:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:45,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 10:57:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:45,264 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 13 treesize of output 9 [2022-07-12 10:57:49,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:57:49,437 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 22 treesize of output 21 [2022-07-12 10:57:51,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:57:51,619 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:57:51,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 1 [2022-07-12 10:57:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 10:57:51,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:51,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509212915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:51,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:51,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 24 [2022-07-12 10:57:51,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596835363] [2022-07-12 10:57:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:57:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:57:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2022-07-12 10:57:51,625 INFO L87 Difference]: Start difference. First operand 210 states and 279 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 10:57:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:51,743 INFO L93 Difference]: Finished difference Result 475 states and 634 transitions. [2022-07-12 10:57:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:57:51,744 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2022-07-12 10:57:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:51,746 INFO L225 Difference]: With dead ends: 475 [2022-07-12 10:57:51,746 INFO L226 Difference]: Without dead ends: 297 [2022-07-12 10:57:51,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 143 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=91, Invalid=558, Unknown=1, NotChecked=0, Total=650 [2022-07-12 10:57:51,747 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 48 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:51,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1120 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 92 Unchecked, 0.1s Time] [2022-07-12 10:57:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-12 10:57:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 248. [2022-07-12 10:57:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 178 states have (on average 1.1404494382022472) internal successors, (203), 183 states have internal predecessors, (203), 47 states have call successors, (47), 20 states have call predecessors, (47), 22 states have return successors, (74), 44 states have call predecessors, (74), 46 states have call successors, (74) [2022-07-12 10:57:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 324 transitions. [2022-07-12 10:57:51,762 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 324 transitions. Word has length 130 [2022-07-12 10:57:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:51,762 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 324 transitions. [2022-07-12 10:57:51,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 10:57:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 324 transitions. [2022-07-12 10:57:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:57:51,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:51,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:51,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:51,986 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,SelfDestructingSolverStorable15 [2022-07-12 10:57:51,986 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1674369294, now seen corresponding path program 1 times [2022-07-12 10:57:51,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:51,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716525202] [2022-07-12 10:57:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:57:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:57:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:57:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:57:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:57:52,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716525202] [2022-07-12 10:57:52,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716525202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246102333] [2022-07-12 10:57:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:52,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:52,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:52,708 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 10:57:52,709 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 10:57:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:53,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-12 10:57:53,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:53,403 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 10:57:53,406 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 13 treesize of output 9 [2022-07-12 10:57:53,928 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 16 treesize of output 8 [2022-07-12 10:57:53,932 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 18 treesize of output 10 [2022-07-12 10:57:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 10:57:53,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:53,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246102333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:53,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:53,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 29 [2022-07-12 10:57:53,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764620147] [2022-07-12 10:57:53,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:57:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:53,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:57:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-12 10:57:53,978 INFO L87 Difference]: Start difference. First operand 248 states and 324 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 10:57:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:54,403 INFO L93 Difference]: Finished difference Result 489 states and 652 transitions. [2022-07-12 10:57:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:57:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2022-07-12 10:57:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:54,405 INFO L225 Difference]: With dead ends: 489 [2022-07-12 10:57:54,405 INFO L226 Difference]: Without dead ends: 308 [2022-07-12 10:57:54,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:57:54,407 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 115 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:54,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 940 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 368 Invalid, 0 Unknown, 138 Unchecked, 0.3s Time] [2022-07-12 10:57:54,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-12 10:57:54,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 270. [2022-07-12 10:57:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 197 states have (on average 1.1269035532994924) internal successors, (222), 203 states have internal predecessors, (222), 47 states have call successors, (47), 22 states have call predecessors, (47), 25 states have return successors, (74), 44 states have call predecessors, (74), 46 states have call successors, (74) [2022-07-12 10:57:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 343 transitions. [2022-07-12 10:57:54,423 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 343 transitions. Word has length 130 [2022-07-12 10:57:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:54,425 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 343 transitions. [2022-07-12 10:57:54,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 10:57:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 343 transitions. [2022-07-12 10:57:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 10:57:54,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:54,427 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:54,456 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 10:57:54,643 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,SelfDestructingSolverStorable16 [2022-07-12 10:57:54,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1989368778, now seen corresponding path program 2 times [2022-07-12 10:57:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423858767] [2022-07-12 10:57:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:57:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:57:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:57:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:57:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 10:57:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:54,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423858767] [2022-07-12 10:57:54,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423858767] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:54,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680068978] [2022-07-12 10:57:54,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:57:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:54,971 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 10:57:54,972 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 10:57:55,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:57:55,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:57:55,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:57:55,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 10:57:55,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:57:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680068978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:55,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:57:55,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 10:57:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290684329] [2022-07-12 10:57:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:57:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:57:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:57:55,762 INFO L87 Difference]: Start difference. First operand 270 states and 343 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:57:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:55,907 INFO L93 Difference]: Finished difference Result 444 states and 574 transitions. [2022-07-12 10:57:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:57:55,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2022-07-12 10:57:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:55,910 INFO L225 Difference]: With dead ends: 444 [2022-07-12 10:57:55,910 INFO L226 Difference]: Without dead ends: 258 [2022-07-12 10:57:55,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 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 10:57:55,911 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 12 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:55,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1290 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:57:55,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-12 10:57:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2022-07-12 10:57:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 186 states have (on average 1.118279569892473) internal successors, (208), 191 states have internal predecessors, (208), 47 states have call successors, (47), 22 states have call predecessors, (47), 24 states have return successors, (70), 44 states have call predecessors, (70), 46 states have call successors, (70) [2022-07-12 10:57:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 325 transitions. [2022-07-12 10:57:55,926 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 325 transitions. Word has length 134 [2022-07-12 10:57:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:55,926 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 325 transitions. [2022-07-12 10:57:55,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:57:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 325 transitions. [2022-07-12 10:57:55,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 10:57:55,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:55,928 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:55,958 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 10:57:56,139 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,SelfDestructingSolverStorable17 [2022-07-12 10:57:56,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash -549959673, now seen corresponding path program 1 times [2022-07-12 10:57:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:56,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703905317] [2022-07-12 10:57:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:57:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:57:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:57:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:57:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:57:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:57:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 10:57:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-12 10:57:56,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:56,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703905317] [2022-07-12 10:57:56,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703905317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:56,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:56,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-12 10:57:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304570032] [2022-07-12 10:57:56,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 10:57:56,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:56,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 10:57:56,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:57:56,868 INFO L87 Difference]: Start difference. First operand 258 states and 325 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 19 states have internal predecessors, (70), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-12 10:57:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:58,958 INFO L93 Difference]: Finished difference Result 491 states and 666 transitions. [2022-07-12 10:57:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:57:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 19 states have internal predecessors, (70), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 137 [2022-07-12 10:57:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:58,960 INFO L225 Difference]: With dead ends: 491 [2022-07-12 10:57:58,960 INFO L226 Difference]: Without dead ends: 317 [2022-07-12 10:57:58,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 10:57:58,962 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 190 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:58,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 816 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 10:57:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-12 10:57:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 283. [2022-07-12 10:57:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 199 states have (on average 1.1306532663316582) internal successors, (225), 204 states have internal predecessors, (225), 58 states have call successors, (58), 23 states have call predecessors, (58), 25 states have return successors, (85), 55 states have call predecessors, (85), 57 states have call successors, (85) [2022-07-12 10:57:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 368 transitions. [2022-07-12 10:57:58,985 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 368 transitions. Word has length 137 [2022-07-12 10:57:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:58,985 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 368 transitions. [2022-07-12 10:57:58,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 19 states have internal predecessors, (70), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-12 10:57:58,985 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 368 transitions. [2022-07-12 10:57:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 10:57:58,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:58,987 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 10:57:58,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:57:58,988 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1094566079, now seen corresponding path program 3 times [2022-07-12 10:57:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:58,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107298847] [2022-07-12 10:57:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:58,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:57:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:57:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:57:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:57:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:57:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:57:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 10:57:59,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:59,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107298847] [2022-07-12 10:57:59,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107298847] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:59,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997303982] [2022-07-12 10:57:59,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:57:59,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:59,685 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 10:57:59,693 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 10:58:00,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:58:00,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:00,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:58:00,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 10:58:00,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:01,186 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:58:01,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 10:58:01,193 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 10:58:01,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-12 10:58:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:58:01,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997303982] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:01,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:01,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 33 [2022-07-12 10:58:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520204508] [2022-07-12 10:58:01,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:01,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 10:58:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:01,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 10:58:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:58:01,236 INFO L87 Difference]: Start difference. First operand 283 states and 368 transitions. Second operand has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 10 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2022-07-12 10:58:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:03,151 INFO L93 Difference]: Finished difference Result 477 states and 611 transitions. [2022-07-12 10:58:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 10:58:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 10 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) Word has length 136 [2022-07-12 10:58:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:03,154 INFO L225 Difference]: With dead ends: 477 [2022-07-12 10:58:03,154 INFO L226 Difference]: Without dead ends: 344 [2022-07-12 10:58:03,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 284 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=2041, Unknown=0, NotChecked=0, Total=2352 [2022-07-12 10:58:03,155 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 428 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:03,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 792 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2608 Invalid, 0 Unknown, 288 Unchecked, 1.5s Time] [2022-07-12 10:58:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-12 10:58:03,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 319. [2022-07-12 10:58:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 233 states have (on average 1.128755364806867) internal successors, (263), 240 states have internal predecessors, (263), 57 states have call successors, (57), 24 states have call predecessors, (57), 28 states have return successors, (81), 54 states have call predecessors, (81), 56 states have call successors, (81) [2022-07-12 10:58:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 401 transitions. [2022-07-12 10:58:03,176 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 401 transitions. Word has length 136 [2022-07-12 10:58:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:03,176 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 401 transitions. [2022-07-12 10:58:03,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 30 states have internal predecessors, (131), 10 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2022-07-12 10:58:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 401 transitions. [2022-07-12 10:58:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 10:58:03,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:03,178 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:03,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:03,391 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:03,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1774102651, now seen corresponding path program 1 times [2022-07-12 10:58:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:03,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164253352] [2022-07-12 10:58:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:58:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:58:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:58:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-12 10:58:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164253352] [2022-07-12 10:58:03,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164253352] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933913427] [2022-07-12 10:58:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:03,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:03,715 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:03,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:58:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:58:04,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 10:58:04,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:58:04,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933913427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:04,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:58:04,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 10:58:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698499227] [2022-07-12 10:58:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:58:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:58:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:04,185 INFO L87 Difference]: Start difference. First operand 319 states and 401 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:58:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:04,303 INFO L93 Difference]: Finished difference Result 497 states and 625 transitions. [2022-07-12 10:58:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:58:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-07-12 10:58:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:04,306 INFO L225 Difference]: With dead ends: 497 [2022-07-12 10:58:04,306 INFO L226 Difference]: Without dead ends: 277 [2022-07-12 10:58:04,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 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 10:58:04,309 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:04,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1276 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:58:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-12 10:58:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2022-07-12 10:58:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 195 states have (on average 1.123076923076923) internal successors, (219), 202 states have internal predecessors, (219), 47 states have call successors, (47), 19 states have call predecessors, (47), 24 states have return successors, (60), 45 states have call predecessors, (60), 46 states have call successors, (60) [2022-07-12 10:58:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 326 transitions. [2022-07-12 10:58:04,325 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 326 transitions. Word has length 140 [2022-07-12 10:58:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:04,325 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 326 transitions. [2022-07-12 10:58:04,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:58:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 326 transitions. [2022-07-12 10:58:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 10:58:04,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:04,327 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:04,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:04,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1679989516, now seen corresponding path program 1 times [2022-07-12 10:58:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:04,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002216532] [2022-07-12 10:58:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 10:58:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002216532] [2022-07-12 10:58:04,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002216532] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759072913] [2022-07-12 10:58:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:04,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:04,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:04,938 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:04,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:58:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:05,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-12 10:58:05,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:05,521 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 10:58:05,530 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 11 treesize of output 7 [2022-07-12 10:58:05,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:05,830 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 24 treesize of output 23 [2022-07-12 10:58:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 102 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 10:58:06,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:08,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759072913] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:08,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:08,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 26 [2022-07-12 10:58:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933492257] [2022-07-12 10:58:08,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:08,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:58:08,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:58:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=957, Unknown=1, NotChecked=0, Total=1056 [2022-07-12 10:58:08,782 INFO L87 Difference]: Start difference. First operand 267 states and 326 transitions. Second operand has 26 states, 22 states have (on average 6.454545454545454) internal successors, (142), 23 states have internal predecessors, (142), 12 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (27), 8 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-12 10:58:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:10,302 INFO L93 Difference]: Finished difference Result 604 states and 741 transitions. [2022-07-12 10:58:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:58:10,303 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 6.454545454545454) internal successors, (142), 23 states have internal predecessors, (142), 12 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (27), 8 states have call predecessors, (27), 11 states have call successors, (27) Word has length 142 [2022-07-12 10:58:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:10,305 INFO L225 Difference]: With dead ends: 604 [2022-07-12 10:58:10,305 INFO L226 Difference]: Without dead ends: 426 [2022-07-12 10:58:10,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 203 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=357, Invalid=2834, Unknown=1, NotChecked=0, Total=3192 [2022-07-12 10:58:10,307 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 267 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 471 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:10,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 827 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1581 Invalid, 0 Unknown, 471 Unchecked, 0.9s Time] [2022-07-12 10:58:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-12 10:58:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 377. [2022-07-12 10:58:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 292 states have (on average 1.1267123287671232) internal successors, (329), 301 states have internal predecessors, (329), 53 states have call successors, (53), 24 states have call predecessors, (53), 31 states have return successors, (76), 51 states have call predecessors, (76), 52 states have call successors, (76) [2022-07-12 10:58:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 458 transitions. [2022-07-12 10:58:10,329 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 458 transitions. Word has length 142 [2022-07-12 10:58:10,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:10,329 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 458 transitions. [2022-07-12 10:58:10,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 6.454545454545454) internal successors, (142), 23 states have internal predecessors, (142), 12 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (27), 8 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-12 10:58:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 458 transitions. [2022-07-12 10:58:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 10:58:10,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:10,331 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:10,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:10,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-12 10:58:10,558 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -181271120, now seen corresponding path program 2 times [2022-07-12 10:58:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:10,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452691358] [2022-07-12 10:58:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 10:58:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:11,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452691358] [2022-07-12 10:58:11,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452691358] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:11,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639756033] [2022-07-12 10:58:11,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:58:11,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:11,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:11,650 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:11,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:58:12,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:58:12,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:58:12,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-12 10:58:12,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:12,557 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 10:58:14,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:14,790 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 24 treesize of output 23 [2022-07-12 10:58:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:21,144 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 24 treesize of output 23 [2022-07-12 10:58:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 64 proven. 45 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 10:58:29,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:31,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639756033] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:31,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:31,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 33 [2022-07-12 10:58:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972048843] [2022-07-12 10:58:31,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:31,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 10:58:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 10:58:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1432, Unknown=2, NotChecked=0, Total=1560 [2022-07-12 10:58:31,280 INFO L87 Difference]: Start difference. First operand 377 states and 458 transitions. Second operand has 33 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 16 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-12 10:58:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:33,599 INFO L93 Difference]: Finished difference Result 640 states and 775 transitions. [2022-07-12 10:58:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-12 10:58:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 16 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) Word has length 142 [2022-07-12 10:58:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:33,602 INFO L225 Difference]: With dead ends: 640 [2022-07-12 10:58:33,602 INFO L226 Difference]: Without dead ends: 481 [2022-07-12 10:58:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 203 SyntacticMatches, 18 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1687 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=459, Invalid=4795, Unknown=2, NotChecked=0, Total=5256 [2022-07-12 10:58:33,605 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 292 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 716 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:33,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1367 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2178 Invalid, 0 Unknown, 716 Unchecked, 1.3s Time] [2022-07-12 10:58:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-07-12 10:58:33,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 429. [2022-07-12 10:58:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 332 states have (on average 1.1144578313253013) internal successors, (370), 344 states have internal predecessors, (370), 57 states have call successors, (57), 30 states have call predecessors, (57), 39 states have return successors, (85), 54 states have call predecessors, (85), 56 states have call successors, (85) [2022-07-12 10:58:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 512 transitions. [2022-07-12 10:58:33,630 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 512 transitions. Word has length 142 [2022-07-12 10:58:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:33,630 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 512 transitions. [2022-07-12 10:58:33,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.206896551724138) internal successors, (151), 30 states have internal predecessors, (151), 16 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 12 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-12 10:58:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 512 transitions. [2022-07-12 10:58:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 10:58:33,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:33,632 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:33,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-12 10:58:33,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:33,846 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 987319158, now seen corresponding path program 1 times [2022-07-12 10:58:33,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:33,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568202662] [2022-07-12 10:58:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 10:58:34,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568202662] [2022-07-12 10:58:34,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568202662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096955901] [2022-07-12 10:58:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:34,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:34,254 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:34,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 10:58:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:34,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-12 10:58:34,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:34,761 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 10:58:34,921 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:58:34,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-12 10:58:35,243 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-12 10:58:35,244 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 24 treesize of output 30 [2022-07-12 10:58:35,283 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:58:35,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:58:35,287 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 16 treesize of output 18 [2022-07-12 10:58:35,562 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 16 treesize of output 18 [2022-07-12 10:58:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 48 proven. 77 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 10:58:36,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:36,892 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2078 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| v_ArrVal_2078) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|))) (let ((.cse0 (mod (select .cse1 (+ |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset| 16)) 18446744073709551616))) (or (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset|) 18446744073709551616))) (= 0 .cse0))))) is different from false [2022-07-12 10:58:36,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096955901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:36,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:36,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22] total 33 [2022-07-12 10:58:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916395722] [2022-07-12 10:58:36,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:36,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 10:58:36,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 10:58:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1556, Unknown=1, NotChecked=80, Total=1806 [2022-07-12 10:58:36,904 INFO L87 Difference]: Start difference. First operand 429 states and 512 transitions. Second operand has 33 states, 32 states have (on average 4.90625) internal successors, (157), 31 states have internal predecessors, (157), 10 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-12 10:58:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:38,674 INFO L93 Difference]: Finished difference Result 615 states and 733 transitions. [2022-07-12 10:58:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:58:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.90625) internal successors, (157), 31 states have internal predecessors, (157), 10 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 8 states have call successors, (28) Word has length 142 [2022-07-12 10:58:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:38,676 INFO L225 Difference]: With dead ends: 615 [2022-07-12 10:58:38,677 INFO L226 Difference]: Without dead ends: 501 [2022-07-12 10:58:38,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 182 SyntacticMatches, 21 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1594 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=411, Invalid=4148, Unknown=1, NotChecked=132, Total=4692 [2022-07-12 10:58:38,678 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 172 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1017 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:38,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1186 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1730 Invalid, 0 Unknown, 1017 Unchecked, 1.1s Time] [2022-07-12 10:58:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-12 10:58:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 479. [2022-07-12 10:58:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 374 states have (on average 1.1042780748663101) internal successors, (413), 385 states have internal predecessors, (413), 62 states have call successors, (62), 35 states have call predecessors, (62), 42 states have return successors, (90), 58 states have call predecessors, (90), 61 states have call successors, (90) [2022-07-12 10:58:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 565 transitions. [2022-07-12 10:58:38,705 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 565 transitions. Word has length 142 [2022-07-12 10:58:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:38,705 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 565 transitions. [2022-07-12 10:58:38,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.90625) internal successors, (157), 31 states have internal predecessors, (157), 10 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (28), 9 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-12 10:58:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 565 transitions. [2022-07-12 10:58:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 10:58:38,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:38,708 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:38,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:38,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:38,935 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:38,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:38,935 INFO L85 PathProgramCache]: Analyzing trace with hash -417309132, now seen corresponding path program 1 times [2022-07-12 10:58:38,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:38,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577247806] [2022-07-12 10:58:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:38,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 18 proven. 51 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-12 10:58:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:39,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577247806] [2022-07-12 10:58:39,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577247806] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:39,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396673334] [2022-07-12 10:58:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:39,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:39,608 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:39,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 10:58:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:40,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-12 10:58:40,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:40,300 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:40,300 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 26 treesize of output 30 [2022-07-12 10:58:40,307 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 15 treesize of output 11 [2022-07-12 10:58:40,367 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:40,368 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 30 treesize of output 34 [2022-07-12 10:58:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 76 proven. 60 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 10:58:47,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:58:47,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396673334] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:47,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:47,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 11] total 46 [2022-07-12 10:58:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610946132] [2022-07-12 10:58:47,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:47,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-12 10:58:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:47,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-12 10:58:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1907, Unknown=1, NotChecked=0, Total=2070 [2022-07-12 10:58:47,981 INFO L87 Difference]: Start difference. First operand 479 states and 565 transitions. Second operand has 46 states, 42 states have (on average 4.428571428571429) internal successors, (186), 43 states have internal predecessors, (186), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-12 10:58:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:53,085 INFO L93 Difference]: Finished difference Result 768 states and 949 transitions. [2022-07-12 10:58:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-12 10:58:53,086 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 42 states have (on average 4.428571428571429) internal successors, (186), 43 states have internal predecessors, (186), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) Word has length 142 [2022-07-12 10:58:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:53,088 INFO L225 Difference]: With dead ends: 768 [2022-07-12 10:58:53,088 INFO L226 Difference]: Without dead ends: 427 [2022-07-12 10:58:53,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 293 SyntacticMatches, 11 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2438 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=783, Invalid=7958, Unknown=1, NotChecked=0, Total=8742 [2022-07-12 10:58:53,091 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 470 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 5614 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 6833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 5614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 859 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:53,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1535 Invalid, 6833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 5614 Invalid, 0 Unknown, 859 Unchecked, 3.3s Time] [2022-07-12 10:58:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-12 10:58:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 364. [2022-07-12 10:58:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 275 states have (on average 1.08) internal successors, (297), 280 states have internal predecessors, (297), 54 states have call successors, (54), 31 states have call predecessors, (54), 34 states have return successors, (69), 52 states have call predecessors, (69), 53 states have call successors, (69) [2022-07-12 10:58:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 420 transitions. [2022-07-12 10:58:53,118 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 420 transitions. Word has length 142 [2022-07-12 10:58:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:53,118 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 420 transitions. [2022-07-12 10:58:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 42 states have (on average 4.428571428571429) internal successors, (186), 43 states have internal predecessors, (186), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-12 10:58:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 420 transitions. [2022-07-12 10:58:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:58:53,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:53,120 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:53,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 10:58:53,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:53,348 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1185688539, now seen corresponding path program 1 times [2022-07-12 10:58:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:53,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689918510] [2022-07-12 10:58:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:53,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:58:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:58:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:58:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:58:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:58:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-12 10:58:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:53,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689918510] [2022-07-12 10:58:53,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689918510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:58:53,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:58:53,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:58:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563644201] [2022-07-12 10:58:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:58:53,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:58:53,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:58:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:58:53,631 INFO L87 Difference]: Start difference. First operand 364 states and 420 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:58:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:54,194 INFO L93 Difference]: Finished difference Result 376 states and 434 transitions. [2022-07-12 10:58:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:58:54,194 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2022-07-12 10:58:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:54,196 INFO L225 Difference]: With dead ends: 376 [2022-07-12 10:58:54,196 INFO L226 Difference]: Without dead ends: 374 [2022-07-12 10:58:54,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:58:54,196 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 95 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:54,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 726 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:58:54,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-12 10:58:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 369. [2022-07-12 10:58:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 278 states have (on average 1.079136690647482) internal successors, (300), 283 states have internal predecessors, (300), 55 states have call successors, (55), 32 states have call predecessors, (55), 35 states have return successors, (70), 53 states have call predecessors, (70), 54 states have call successors, (70) [2022-07-12 10:58:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 425 transitions. [2022-07-12 10:58:54,221 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 425 transitions. Word has length 144 [2022-07-12 10:58:54,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:54,222 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 425 transitions. [2022-07-12 10:58:54,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:58:54,222 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 425 transitions. [2022-07-12 10:58:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 10:58:54,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:54,223 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:58:54,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:58:54,224 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 886316019, now seen corresponding path program 1 times [2022-07-12 10:58:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588839578] [2022-07-12 10:58:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:54,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:58:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:58:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:58:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:58:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:58:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:58:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:58:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 10:58:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-12 10:58:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588839578] [2022-07-12 10:58:54,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588839578] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284600824] [2022-07-12 10:58:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:54,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:54,828 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:58:54,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 10:58:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:55,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-12 10:58:55,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:57,540 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-12 10:58:57,540 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 22 treesize of output 25 [2022-07-12 10:58:57,614 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 37 treesize of output 32 [2022-07-12 10:58:57,622 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 10:58:57,963 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-12 10:58:57,964 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 31 treesize of output 30 [2022-07-12 10:59:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 77 proven. 60 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:59:05,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 10:59:06,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284600824] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:59:06,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:59:06,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28, 13] total 54 [2022-07-12 10:59:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421143601] [2022-07-12 10:59:06,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:06,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-12 10:59:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-12 10:59:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2656, Unknown=2, NotChecked=0, Total=2862 [2022-07-12 10:59:06,150 INFO L87 Difference]: Start difference. First operand 369 states and 425 transitions. Second operand has 54 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 50 states have internal predecessors, (192), 20 states have call successors, (48), 8 states have call predecessors, (48), 11 states have return successors, (43), 15 states have call predecessors, (43), 18 states have call successors, (43) [2022-07-12 10:59:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:13,154 INFO L93 Difference]: Finished difference Result 615 states and 736 transitions. [2022-07-12 10:59:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-07-12 10:59:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 50 states have internal predecessors, (192), 20 states have call successors, (48), 8 states have call predecessors, (48), 11 states have return successors, (43), 15 states have call predecessors, (43), 18 states have call successors, (43) Word has length 149 [2022-07-12 10:59:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:13,157 INFO L225 Difference]: With dead ends: 615 [2022-07-12 10:59:13,157 INFO L226 Difference]: Without dead ends: 470 [2022-07-12 10:59:13,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 292 SyntacticMatches, 15 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3995 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=1414, Invalid=12626, Unknown=2, NotChecked=0, Total=14042 [2022-07-12 10:59:13,161 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 455 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 5402 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 7023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 5402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1387 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:13,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 2212 Invalid, 7023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 5402 Invalid, 0 Unknown, 1387 Unchecked, 3.2s Time] [2022-07-12 10:59:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-12 10:59:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 418. [2022-07-12 10:59:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 314 states have (on average 1.070063694267516) internal successors, (336), 317 states have internal predecessors, (336), 64 states have call successors, (64), 38 states have call predecessors, (64), 39 states have return successors, (75), 62 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-12 10:59:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 475 transitions. [2022-07-12 10:59:13,192 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 475 transitions. Word has length 149 [2022-07-12 10:59:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:13,192 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 475 transitions. [2022-07-12 10:59:13,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 50 states have internal predecessors, (192), 20 states have call successors, (48), 8 states have call predecessors, (48), 11 states have return successors, (43), 15 states have call predecessors, (43), 18 states have call successors, (43) [2022-07-12 10:59:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 475 transitions. [2022-07-12 10:59:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 10:59:13,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:13,194 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:13,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 10:59:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 10:59:13,408 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1830485416, now seen corresponding path program 1 times [2022-07-12 10:59:13,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:13,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319137808] [2022-07-12 10:59:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:13,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:59:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:59:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:59:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:59:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:59:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 10:59:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 10:59:14,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:14,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319137808] [2022-07-12 10:59:14,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319137808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:14,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106986410] [2022-07-12 10:59:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:14,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:14,772 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:59:14,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 10:59:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 2828 conjuncts, 133 conjunts are in the unsatisfiable core [2022-07-12 10:59:15,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:59:15,517 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 10:59:15,522 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 13 treesize of output 9 [2022-07-12 10:59:15,914 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:59:15,914 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 16 treesize of output 22 [2022-07-12 10:59:15,920 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 7 treesize of output 3 [2022-07-12 10:59:15,931 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:59:15,932 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 17 treesize of output 23 [2022-07-12 10:59:15,936 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 8 treesize of output 4 [2022-07-12 10:59:16,029 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:59:16,029 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 21 treesize of output 27 [2022-07-12 10:59:16,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:59:16,044 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 10:59:16,044 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 25 treesize of output 28 [2022-07-12 10:59:16,076 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 10:59:16,082 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 10:59:16,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:16,834 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 33 treesize of output 32 [2022-07-12 10:59:16,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:16,838 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 33 treesize of output 32 [2022-07-12 10:59:18,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:59:18,416 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-12 10:59:18,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 70 [2022-07-12 10:59:18,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:59:18,428 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:59:18,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2022-07-12 10:59:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 50 proven. 122 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 10:59:18,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:21,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106986410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:21,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:21,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 38] total 58 [2022-07-12 10:59:21,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515271825] [2022-07-12 10:59:21,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:21,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-12 10:59:21,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-12 10:59:21,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4713, Unknown=1, NotChecked=0, Total=4970 [2022-07-12 10:59:21,500 INFO L87 Difference]: Start difference. First operand 418 states and 475 transitions. Second operand has 58 states, 52 states have (on average 3.769230769230769) internal successors, (196), 50 states have internal predecessors, (196), 18 states have call successors, (33), 8 states have call predecessors, (33), 12 states have return successors, (30), 16 states have call predecessors, (30), 16 states have call successors, (30) [2022-07-12 10:59:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:27,747 INFO L93 Difference]: Finished difference Result 536 states and 610 transitions. [2022-07-12 10:59:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-07-12 10:59:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 3.769230769230769) internal successors, (196), 50 states have internal predecessors, (196), 18 states have call successors, (33), 8 states have call predecessors, (33), 12 states have return successors, (30), 16 states have call predecessors, (30), 16 states have call successors, (30) Word has length 151 [2022-07-12 10:59:27,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:27,750 INFO L225 Difference]: With dead ends: 536 [2022-07-12 10:59:27,750 INFO L226 Difference]: Without dead ends: 529 [2022-07-12 10:59:27,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 194 SyntacticMatches, 13 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1242, Invalid=19063, Unknown=1, NotChecked=0, Total=20306 [2022-07-12 10:59:27,753 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 266 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 6799 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 8058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 6799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1014 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:27,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2806 Invalid, 8058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 6799 Invalid, 0 Unknown, 1014 Unchecked, 3.2s Time] [2022-07-12 10:59:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-07-12 10:59:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 517. [2022-07-12 10:59:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 384 states have (on average 1.0703125) internal successors, (411), 389 states have internal predecessors, (411), 82 states have call successors, (82), 47 states have call predecessors, (82), 50 states have return successors, (95), 80 states have call predecessors, (95), 80 states have call successors, (95) [2022-07-12 10:59:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 588 transitions. [2022-07-12 10:59:27,795 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 588 transitions. Word has length 151 [2022-07-12 10:59:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:27,796 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 588 transitions. [2022-07-12 10:59:27,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 3.769230769230769) internal successors, (196), 50 states have internal predecessors, (196), 18 states have call successors, (33), 8 states have call predecessors, (33), 12 states have return successors, (30), 16 states have call predecessors, (30), 16 states have call successors, (30) [2022-07-12 10:59:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 588 transitions. [2022-07-12 10:59:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 10:59:27,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:27,798 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:27,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 10:59:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 10:59:28,007 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash 201357244, now seen corresponding path program 1 times [2022-07-12 10:59:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:28,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869325721] [2022-07-12 10:59:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:59:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:59:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 10:59:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869325721] [2022-07-12 10:59:28,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869325721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:28,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:28,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:59:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334198880] [2022-07-12 10:59:28,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:28,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:59:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:59:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:59:28,239 INFO L87 Difference]: Start difference. First operand 517 states and 588 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 10:59:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:28,780 INFO L93 Difference]: Finished difference Result 637 states and 746 transitions. [2022-07-12 10:59:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:59:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2022-07-12 10:59:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:28,782 INFO L225 Difference]: With dead ends: 637 [2022-07-12 10:59:28,782 INFO L226 Difference]: Without dead ends: 574 [2022-07-12 10:59:28,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:59:28,783 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 142 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:28,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 399 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:59:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-07-12 10:59:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 527. [2022-07-12 10:59:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 392 states have (on average 1.0688775510204083) internal successors, (419), 397 states have internal predecessors, (419), 82 states have call successors, (82), 47 states have call predecessors, (82), 52 states have return successors, (97), 82 states have call predecessors, (97), 80 states have call successors, (97) [2022-07-12 10:59:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 598 transitions. [2022-07-12 10:59:28,828 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 598 transitions. Word has length 155 [2022-07-12 10:59:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:28,828 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 598 transitions. [2022-07-12 10:59:28,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 10:59:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 598 transitions. [2022-07-12 10:59:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 10:59:28,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:28,830 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:28,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:59:28,831 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2095970207, now seen corresponding path program 1 times [2022-07-12 10:59:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:28,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969679556] [2022-07-12 10:59:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:59:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:59:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 10:59:29,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969679556] [2022-07-12 10:59:29,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969679556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:29,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:29,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:59:29,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667861186] [2022-07-12 10:59:29,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:29,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:59:29,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:59:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:59:29,078 INFO L87 Difference]: Start difference. First operand 527 states and 598 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 10:59:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:29,662 INFO L93 Difference]: Finished difference Result 558 states and 637 transitions. [2022-07-12 10:59:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:59:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2022-07-12 10:59:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:29,665 INFO L225 Difference]: With dead ends: 558 [2022-07-12 10:59:29,665 INFO L226 Difference]: Without dead ends: 556 [2022-07-12 10:59:29,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:59:29,666 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 190 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:29,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 296 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:59:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-07-12 10:59:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 535. [2022-07-12 10:59:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 398 states have (on average 1.0678391959798994) internal successors, (425), 403 states have internal predecessors, (425), 82 states have call successors, (82), 49 states have call predecessors, (82), 54 states have return successors, (97), 82 states have call predecessors, (97), 80 states have call successors, (97) [2022-07-12 10:59:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 604 transitions. [2022-07-12 10:59:29,710 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 604 transitions. Word has length 156 [2022-07-12 10:59:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:29,710 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 604 transitions. [2022-07-12 10:59:29,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 10:59:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 604 transitions. [2022-07-12 10:59:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 10:59:29,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:29,712 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:59:29,712 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash -112341763, now seen corresponding path program 1 times [2022-07-12 10:59:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:29,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015792542] [2022-07-12 10:59:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:59:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:59:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:59:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 10:59:30,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015792542] [2022-07-12 10:59:30,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015792542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:30,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:30,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-12 10:59:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125545364] [2022-07-12 10:59:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:30,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:59:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:59:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:59:30,524 INFO L87 Difference]: Start difference. First operand 535 states and 604 transitions. Second operand has 20 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2022-07-12 10:59:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:31,738 INFO L93 Difference]: Finished difference Result 582 states and 669 transitions. [2022-07-12 10:59:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:59:31,739 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 162 [2022-07-12 10:59:31,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:31,741 INFO L225 Difference]: With dead ends: 582 [2022-07-12 10:59:31,741 INFO L226 Difference]: Without dead ends: 580 [2022-07-12 10:59:31,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:59:31,742 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 308 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:31,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 334 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 10:59:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-12 10:59:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 546. [2022-07-12 10:59:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 406 states have (on average 1.0689655172413792) internal successors, (434), 411 states have internal predecessors, (434), 84 states have call successors, (84), 50 states have call predecessors, (84), 55 states have return successors, (99), 84 states have call predecessors, (99), 82 states have call successors, (99) [2022-07-12 10:59:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 617 transitions. [2022-07-12 10:59:31,791 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 617 transitions. Word has length 162 [2022-07-12 10:59:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:31,792 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 617 transitions. [2022-07-12 10:59:31,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2022-07-12 10:59:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 617 transitions. [2022-07-12 10:59:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 10:59:31,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:31,794 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:31,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:59:31,794 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash -680984155, now seen corresponding path program 1 times [2022-07-12 10:59:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:31,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88964830] [2022-07-12 10:59:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:59:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:59:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:59:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 10:59:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:59:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 10:59:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 10:59:32,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88964830] [2022-07-12 10:59:32,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88964830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:32,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:32,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:59:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343515251] [2022-07-12 10:59:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:32,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:59:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:59:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:59:32,114 INFO L87 Difference]: Start difference. First operand 546 states and 617 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-12 10:59:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:32,733 INFO L93 Difference]: Finished difference Result 583 states and 663 transitions. [2022-07-12 10:59:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:59:32,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 166 [2022-07-12 10:59:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:32,736 INFO L225 Difference]: With dead ends: 583 [2022-07-12 10:59:32,736 INFO L226 Difference]: Without dead ends: 581 [2022-07-12 10:59:32,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:59:32,737 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 154 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:32,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 522 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:59:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-12 10:59:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 561. [2022-07-12 10:59:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 415 states have (on average 1.0674698795180724) internal successors, (443), 421 states have internal predecessors, (443), 87 states have call successors, (87), 52 states have call predecessors, (87), 58 states have return successors, (107), 87 states have call predecessors, (107), 85 states have call successors, (107) [2022-07-12 10:59:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 637 transitions. [2022-07-12 10:59:32,783 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 637 transitions. Word has length 166 [2022-07-12 10:59:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:32,783 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 637 transitions. [2022-07-12 10:59:32,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-12 10:59:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 637 transitions. [2022-07-12 10:59:32,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 10:59:32,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:32,785 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:32,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:59:32,785 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:32,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1909091545, now seen corresponding path program 1 times [2022-07-12 10:59:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:32,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236176154] [2022-07-12 10:59:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:59:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:59:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:59:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 10:59:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 10:59:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-12 10:59:34,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236176154] [2022-07-12 10:59:34,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236176154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57045355] [2022-07-12 10:59:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:34,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:34,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:34,616 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:59:34,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 10:59:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:35,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-12 10:59:35,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:59:35,403 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 11 treesize of output 7 [2022-07-12 10:59:35,568 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:59:35,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-12 10:59:35,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:35,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:35,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:59:35,660 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 10:59:35,660 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 1 case distinctions, treesize of input 27 treesize of output 29 [2022-07-12 10:59:35,676 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:59:35,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:59:35,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:35,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:59:35,799 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 10:59:35,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2022-07-12 10:59:36,051 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 10:59:36,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 36 [2022-07-12 10:59:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 10:59:36,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57045355] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:42,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:42,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 37 [2022-07-12 10:59:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859216116] [2022-07-12 10:59:42,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 10:59:42,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 10:59:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1560, Unknown=3, NotChecked=0, Total=1722 [2022-07-12 10:59:42,701 INFO L87 Difference]: Start difference. First operand 561 states and 637 transitions. Second operand has 37 states, 29 states have (on average 3.310344827586207) internal successors, (96), 32 states have internal predecessors, (96), 17 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) [2022-07-12 10:59:45,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:45,100 INFO L93 Difference]: Finished difference Result 595 states and 681 transitions. [2022-07-12 10:59:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:59:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 3.310344827586207) internal successors, (96), 32 states have internal predecessors, (96), 17 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) Word has length 168 [2022-07-12 10:59:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:45,103 INFO L225 Difference]: With dead ends: 595 [2022-07-12 10:59:45,103 INFO L226 Difference]: Without dead ends: 593 [2022-07-12 10:59:45,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 203 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=407, Invalid=3496, Unknown=3, NotChecked=0, Total=3906 [2022-07-12 10:59:45,105 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 310 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:45,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 661 Invalid, 3576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 10:59:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-12 10:59:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 567. [2022-07-12 10:59:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 419 states have (on average 1.0668257756563246) internal successors, (447), 425 states have internal predecessors, (447), 88 states have call successors, (88), 53 states have call predecessors, (88), 59 states have return successors, (108), 88 states have call predecessors, (108), 86 states have call successors, (108) [2022-07-12 10:59:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 643 transitions. [2022-07-12 10:59:45,149 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 643 transitions. Word has length 168 [2022-07-12 10:59:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:45,150 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 643 transitions. [2022-07-12 10:59:45,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 3.310344827586207) internal successors, (96), 32 states have internal predecessors, (96), 17 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) [2022-07-12 10:59:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 643 transitions. [2022-07-12 10:59:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-12 10:59:45,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:45,152 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:45,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 10:59:45,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:45,365 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:45,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1420537502, now seen corresponding path program 1 times [2022-07-12 10:59:45,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:45,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732345007] [2022-07-12 10:59:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:59:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:59:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:59:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:59:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:59:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 10:59:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 10:59:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 10:59:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:45,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732345007] [2022-07-12 10:59:45,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732345007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:45,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:45,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:59:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491270069] [2022-07-12 10:59:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:45,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:59:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:59:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:59:45,733 INFO L87 Difference]: Start difference. First operand 567 states and 643 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 10:59:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:46,403 INFO L93 Difference]: Finished difference Result 731 states and 857 transitions. [2022-07-12 10:59:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:59:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 177 [2022-07-12 10:59:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:46,405 INFO L225 Difference]: With dead ends: 731 [2022-07-12 10:59:46,405 INFO L226 Difference]: Without dead ends: 571 [2022-07-12 10:59:46,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:59:46,406 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 166 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:46,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 523 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:59:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-12 10:59:46,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2022-07-12 10:59:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 421 states have (on average 1.0665083135391924) internal successors, (449), 427 states have internal predecessors, (449), 88 states have call successors, (88), 53 states have call predecessors, (88), 59 states have return successors, (108), 88 states have call predecessors, (108), 86 states have call successors, (108) [2022-07-12 10:59:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 645 transitions. [2022-07-12 10:59:46,457 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 645 transitions. Word has length 177 [2022-07-12 10:59:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:46,457 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 645 transitions. [2022-07-12 10:59:46,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 10:59:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 645 transitions. [2022-07-12 10:59:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 10:59:46,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:46,459 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:59:46,460 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 978298422, now seen corresponding path program 1 times [2022-07-12 10:59:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:46,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14499280] [2022-07-12 10:59:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:59:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:59:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:59:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:59:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 10:59:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:59:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 10:59:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-12 10:59:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:47,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14499280] [2022-07-12 10:59:47,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14499280] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:47,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69289460] [2022-07-12 10:59:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:47,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:47,360 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:59:47,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 10:59:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:47,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-12 10:59:47,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:59:47,945 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 10:59:48,151 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 10:59:48,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:48,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-07-12 10:59:48,725 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 10:59:48,725 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 10:59:48,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 10:59:48,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 10:59:49,038 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-12 10:59:49,038 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 10:59:49,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:00:01,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:00:01,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 28 treesize of output 16 [2022-07-12 11:00:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 38 proven. 141 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 11:00:01,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:02,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69289460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:02,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:00:02,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 41 [2022-07-12 11:00:02,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674670306] [2022-07-12 11:00:02,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:02,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-12 11:00:02,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-12 11:00:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1991, Unknown=3, NotChecked=0, Total=2162 [2022-07-12 11:00:02,456 INFO L87 Difference]: Start difference. First operand 569 states and 645 transitions. Second operand has 41 states, 39 states have (on average 4.333333333333333) internal successors, (169), 36 states have internal predecessors, (169), 17 states have call successors, (35), 11 states have call predecessors, (35), 13 states have return successors, (35), 16 states have call predecessors, (35), 17 states have call successors, (35) [2022-07-12 11:00:10,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:10,600 INFO L93 Difference]: Finished difference Result 797 states and 952 transitions. [2022-07-12 11:00:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-07-12 11:00:10,601 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 4.333333333333333) internal successors, (169), 36 states have internal predecessors, (169), 17 states have call successors, (35), 11 states have call predecessors, (35), 13 states have return successors, (35), 16 states have call predecessors, (35), 17 states have call successors, (35) Word has length 169 [2022-07-12 11:00:10,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:10,603 INFO L225 Difference]: With dead ends: 797 [2022-07-12 11:00:10,603 INFO L226 Difference]: Without dead ends: 685 [2022-07-12 11:00:10,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 262 SyntacticMatches, 16 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=635, Invalid=6500, Unknown=5, NotChecked=0, Total=7140 [2022-07-12 11:00:10,604 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 357 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 4446 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 6671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 4446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1890 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:10,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1640 Invalid, 6671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 4446 Invalid, 0 Unknown, 1890 Unchecked, 2.6s Time] [2022-07-12 11:00:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-07-12 11:00:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 637. [2022-07-12 11:00:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 479 states have (on average 1.0626304801670146) internal successors, (509), 485 states have internal predecessors, (509), 91 states have call successors, (91), 58 states have call predecessors, (91), 66 states have return successors, (113), 93 states have call predecessors, (113), 88 states have call successors, (113) [2022-07-12 11:00:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 713 transitions. [2022-07-12 11:00:10,662 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 713 transitions. Word has length 169 [2022-07-12 11:00:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:10,663 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 713 transitions. [2022-07-12 11:00:10,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 4.333333333333333) internal successors, (169), 36 states have internal predecessors, (169), 17 states have call successors, (35), 11 states have call predecessors, (35), 13 states have return successors, (35), 16 states have call predecessors, (35), 17 states have call successors, (35) [2022-07-12 11:00:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 713 transitions. [2022-07-12 11:00:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 11:00:10,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:10,665 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:10,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:10,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:10,883 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2123440582, now seen corresponding path program 1 times [2022-07-12 11:00:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:10,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733825309] [2022-07-12 11:00:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:00:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:00:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:00:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:00:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:00:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:00:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 11:00:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-12 11:00:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:11,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733825309] [2022-07-12 11:00:11,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733825309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:11,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:11,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-12 11:00:11,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209711200] [2022-07-12 11:00:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:11,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 11:00:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 11:00:11,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:00:11,867 INFO L87 Difference]: Start difference. First operand 637 states and 713 transitions. Second operand has 21 states, 18 states have (on average 3.5) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) [2022-07-12 11:00:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:13,136 INFO L93 Difference]: Finished difference Result 668 states and 766 transitions. [2022-07-12 11:00:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:00:13,136 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.5) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) Word has length 169 [2022-07-12 11:00:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:13,138 INFO L225 Difference]: With dead ends: 668 [2022-07-12 11:00:13,139 INFO L226 Difference]: Without dead ends: 666 [2022-07-12 11:00:13,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:00:13,139 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 312 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:13,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 341 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:00:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-12 11:00:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 645. [2022-07-12 11:00:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 484 states have (on average 1.0640495867768596) internal successors, (515), 491 states have internal predecessors, (515), 93 states have call successors, (93), 59 states have call predecessors, (93), 67 states have return successors, (115), 94 states have call predecessors, (115), 90 states have call successors, (115) [2022-07-12 11:00:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 723 transitions. [2022-07-12 11:00:13,186 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 723 transitions. Word has length 169 [2022-07-12 11:00:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:13,187 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 723 transitions. [2022-07-12 11:00:13,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.5) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) [2022-07-12 11:00:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 723 transitions. [2022-07-12 11:00:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 11:00:13,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:13,189 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:13,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 11:00:13,189 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1104309761, now seen corresponding path program 1 times [2022-07-12 11:00:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:13,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786350642] [2022-07-12 11:00:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:00:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:00:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:00:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:00:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:00:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 11:00:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-12 11:00:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:13,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786350642] [2022-07-12 11:00:13,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786350642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:13,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:13,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:00:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677991632] [2022-07-12 11:00:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:00:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:00:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:00:13,425 INFO L87 Difference]: Start difference. First operand 645 states and 723 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-12 11:00:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:13,987 INFO L93 Difference]: Finished difference Result 703 states and 793 transitions. [2022-07-12 11:00:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:00:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 169 [2022-07-12 11:00:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:13,990 INFO L225 Difference]: With dead ends: 703 [2022-07-12 11:00:13,990 INFO L226 Difference]: Without dead ends: 590 [2022-07-12 11:00:13,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:00:13,991 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 221 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:13,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 243 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:00:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-12 11:00:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 575. [2022-07-12 11:00:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 424 states have (on average 1.0518867924528301) internal successors, (446), 431 states have internal predecessors, (446), 88 states have call successors, (88), 55 states have call predecessors, (88), 62 states have return successors, (108), 88 states have call predecessors, (108), 85 states have call successors, (108) [2022-07-12 11:00:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 642 transitions. [2022-07-12 11:00:14,038 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 642 transitions. Word has length 169 [2022-07-12 11:00:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:14,038 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 642 transitions. [2022-07-12 11:00:14,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-12 11:00:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 642 transitions. [2022-07-12 11:00:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 11:00:14,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:14,040 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:14,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 11:00:14,040 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:14,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1516564060, now seen corresponding path program 1 times [2022-07-12 11:00:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:14,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778512606] [2022-07-12 11:00:14,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:00:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:00:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:00:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:00:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:00:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:00:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:00:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:00:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:00:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 11:00:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 11:00:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778512606] [2022-07-12 11:00:14,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778512606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309977529] [2022-07-12 11:00:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:14,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:14,520 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:00:14,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 11:00:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:15,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 166 conjunts are in the unsatisfiable core [2022-07-12 11:00:15,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:15,110 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 11:00:15,278 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:00:15,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 11:00:15,304 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 11:00:15,307 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 13 treesize of output 9 [2022-07-12 11:00:17,332 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_67| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_67|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_67|))) is different from true [2022-07-12 11:00:33,125 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:00:33,125 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 11:00:33,175 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:00:33,175 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 11:00:33,179 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 10 treesize of output 6 [2022-07-12 11:00:33,198 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:00:33,199 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 17 treesize of output 23 [2022-07-12 11:00:33,206 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 8 treesize of output 4 [2022-07-12 11:00:33,336 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:00:33,336 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 21 treesize of output 27 [2022-07-12 11:00:33,348 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:00:33,348 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 23 treesize of output 29 [2022-07-12 11:00:33,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:00:33,436 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 46 treesize of output 45 [2022-07-12 11:00:33,450 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:00:33,450 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 51 treesize of output 57 [2022-07-12 11:00:33,465 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:00:33,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 80 [2022-07-12 11:00:33,495 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 10 treesize of output 6