./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_from_whole_string_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 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:39:53,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:39:53,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:39:53,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:39:53,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:39:53,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:39:53,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:39:53,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:39:53,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:39:53,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:39:53,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:39:53,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:39:53,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:39:53,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:39:53,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:39:53,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:39:53,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:39:53,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:39:53,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:39:53,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:39:53,713 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:39:53,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:39:53,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:39:53,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:39:53,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:39:53,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:39:53,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:39:53,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:39:53,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:39:53,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:39:53,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:39:53,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:39:53,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:39:53,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:39:53,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:39:53,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:39:53,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:39:53,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:39:53,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:39:53,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:39:53,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:39:53,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:39:53,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:39:53,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:39:53,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:39:53,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:39:53,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:39:53,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:39:53,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:39:53,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:39:53,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:39:53,758 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:39:53,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:39:53,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:39:53,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:39:53,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:39:53,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:39:53,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:39:53,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:39:53,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:39:53,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:39:53,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:39:53,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:39:53,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:39:53,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:39:53,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:39:53,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:39:53,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:39:53,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:39:53,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:39:53,761 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:39:53,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:39:53,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:39:53,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2022-07-13 22:39:53,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:39:53,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:39:53,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:39:53,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:39:53,999 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:39:54,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2022-07-13 22:39:54,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93253546c/695c20a71efe42b490b4f9895c23b281/FLAGe84144e99 [2022-07-13 22:39:54,617 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:39:54,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2022-07-13 22:39:54,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93253546c/695c20a71efe42b490b4f9895c23b281/FLAGe84144e99 [2022-07-13 22:39:55,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93253546c/695c20a71efe42b490b4f9895c23b281 [2022-07-13 22:39:55,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:39:55,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:39:55,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:39:55,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:39:55,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:39:55,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:39:55" (1/1) ... [2022-07-13 22:39:55,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb8b605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:55, skipping insertion in model container [2022-07-13 22:39:55,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:39:55" (1/1) ... [2022-07-13 22:39:55,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:39:55,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:39:55,309 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_from_whole_string_harness.i[4510,4523] [2022-07-13 22:39:55,314 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_from_whole_string_harness.i[4570,4583] [2022-07-13 22:39:55,849 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,851 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,859 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,860 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,861 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,861 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,862 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,863 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,864 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:55,864 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:39:56,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:39:56,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:39:56,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:39:56,146 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:39:56,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:39:56,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:39:56,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:39:56,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:39:56,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:39:56,245 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:39:56,257 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,261 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,302 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,302 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:39:56,439 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:39:56,457 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_from_whole_string_harness.i[4510,4523] [2022-07-13 22:39:56,457 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_from_whole_string_harness.i[4570,4583] [2022-07-13 22:39:56,498 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,503 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,503 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,504 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,504 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,505 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,506 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,506 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,532 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:39:56,533 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:39:56,533 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:39:56,534 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:39:56,534 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:39:56,534 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:39:56,535 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:39:56,535 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:39:56,536 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:39:56,536 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:39:56,558 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:39:56,566 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,569 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,609 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,610 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:39:56,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:39:56,826 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:39:56,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56 WrapperNode [2022-07-13 22:39:56,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:39:56,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:39:56,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:39:56,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:39:56,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:56,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:56,983 INFO L137 Inliner]: procedures = 695, calls = 3053, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 968 [2022-07-13 22:39:56,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:39:56,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:39:56,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:39:56,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:39:56,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:56,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:56,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:56,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:57,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:57,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:57,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:57,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:39:57,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:39:57,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:39:57,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:39:57,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (1/1) ... [2022-07-13 22:39:57,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:39:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:39:57,100 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) [2022-07-13 22:39:57,108 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 [2022-07-13 22:39:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-07-13 22:39:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-07-13 22:39:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-13 22:39:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-13 22:39:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-07-13 22:39:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-07-13 22:39:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:39:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:39:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:39:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-13 22:39:57,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 22:39:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 22:39:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:39:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 22:39:57,142 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 22:39:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:39:57,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:39:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:39:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:39:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:39:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:39:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:39:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:39:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:39:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:39:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:39:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 22:39:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 22:39:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2022-07-13 22:39:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2022-07-13 22:39:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:39:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:39:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:39:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:39:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-13 22:39:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-13 22:39:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:39:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:39:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:39:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:39:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:39:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:39:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-13 22:39:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:39:57,371 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:39:57,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:39:58,274 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:39:58,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:39:58,295 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:39:58,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:39:58 BoogieIcfgContainer [2022-07-13 22:39:58,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:39:58,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:39:58,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:39:58,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:39:58,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:39:55" (1/3) ... [2022-07-13 22:39:58,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a9dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:39:58, skipping insertion in model container [2022-07-13 22:39:58,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:39:56" (2/3) ... [2022-07-13 22:39:58,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a9dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:39:58, skipping insertion in model container [2022-07-13 22:39:58,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:39:58" (3/3) ... [2022-07-13 22:39:58,309 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2022-07-13 22:39:58,318 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:39:58,319 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:39:58,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:39:58,357 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@6b3bc176, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d555733 [2022-07-13 22:39:58,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:39:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-13 22:39:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 22:39:58,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:58,370 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:39:58,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1892676938, now seen corresponding path program 1 times [2022-07-13 22:39:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:58,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519046079] [2022-07-13 22:39:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:58,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:39:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:39:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:39:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:39:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:39:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:39:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:39:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 22:39:58,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:58,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519046079] [2022-07-13 22:39:58,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519046079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:58,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:39:58,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:39:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341418313] [2022-07-13 22:39:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:39:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:39:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:39:58,957 INFO L87 Difference]: Start difference. First operand has 183 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 121 states have internal predecessors, (152), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 22:39:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:39:59,234 INFO L93 Difference]: Finished difference Result 357 states and 513 transitions. [2022-07-13 22:39:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:39:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-07-13 22:39:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:39:59,250 INFO L225 Difference]: With dead ends: 357 [2022-07-13 22:39:59,250 INFO L226 Difference]: Without dead ends: 178 [2022-07-13 22:39:59,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:39:59,261 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 74 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:39:59,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 304 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:39:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-13 22:39:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-13 22:39:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 117 states have internal predecessors, (146), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-13 22:39:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 241 transitions. [2022-07-13 22:39:59,313 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 241 transitions. Word has length 64 [2022-07-13 22:39:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:39:59,314 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 241 transitions. [2022-07-13 22:39:59,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 22:39:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 241 transitions. [2022-07-13 22:39:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 22:39:59,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:39:59,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:39:59,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:39:59,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:39:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:39:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1372550286, now seen corresponding path program 1 times [2022-07-13 22:39:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:39:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764942851] [2022-07-13 22:39:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:39:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:39:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:39:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:39:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:39:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:39:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:39:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:39:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:39:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:39:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:39:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 22:39:59,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:39:59,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764942851] [2022-07-13 22:39:59,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764942851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:39:59,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:39:59,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:39:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500569038] [2022-07-13 22:39:59,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:39:59,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:39:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:39:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:39:59,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:39:59,642 INFO L87 Difference]: Start difference. First operand 178 states and 241 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 22:40:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:00,159 INFO L93 Difference]: Finished difference Result 317 states and 437 transitions. [2022-07-13 22:40:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:40:00,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2022-07-13 22:40:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:00,164 INFO L225 Difference]: With dead ends: 317 [2022-07-13 22:40:00,165 INFO L226 Difference]: Without dead ends: 181 [2022-07-13 22:40:00,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:40:00,170 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 150 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:00,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 535 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:40:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-13 22:40:00,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-13 22:40:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.2542372881355932) internal successors, (148), 120 states have internal predecessors, (148), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2022-07-13 22:40:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2022-07-13 22:40:00,193 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 64 [2022-07-13 22:40:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:00,193 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2022-07-13 22:40:00,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 22:40:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2022-07-13 22:40:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 22:40:00,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:00,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:00,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:40:00,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash -333611875, now seen corresponding path program 1 times [2022-07-13 22:40:00,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:00,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405232165] [2022-07-13 22:40:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:40:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:40:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:40:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 22:40:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:00,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405232165] [2022-07-13 22:40:00,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405232165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:00,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:00,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:40:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489680120] [2022-07-13 22:40:00,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:00,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:40:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:40:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:40:00,492 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 22:40:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:01,316 INFO L93 Difference]: Finished difference Result 331 states and 456 transitions. [2022-07-13 22:40:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:40:01,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2022-07-13 22:40:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:01,318 INFO L225 Difference]: With dead ends: 331 [2022-07-13 22:40:01,318 INFO L226 Difference]: Without dead ends: 201 [2022-07-13 22:40:01,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:40:01,319 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 232 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:01,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 867 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 22:40:01,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-13 22:40:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 185. [2022-07-13 22:40:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 123 states have internal predecessors, (152), 48 states have call successors, (48), 14 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2022-07-13 22:40:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2022-07-13 22:40:01,329 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 70 [2022-07-13 22:40:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:01,330 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2022-07-13 22:40:01,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 22:40:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2022-07-13 22:40:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 22:40:01,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:01,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:01,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:40:01,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash -467625381, now seen corresponding path program 1 times [2022-07-13 22:40:01,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:01,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978935980] [2022-07-13 22:40:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:40:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:40:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:40:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 22:40:01,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978935980] [2022-07-13 22:40:01,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978935980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:01,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:01,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:40:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659712425] [2022-07-13 22:40:01,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:01,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:01,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:40:01,687 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 22:40:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:02,549 INFO L93 Difference]: Finished difference Result 193 states and 259 transitions. [2022-07-13 22:40:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:40:02,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2022-07-13 22:40:02,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:02,554 INFO L225 Difference]: With dead ends: 193 [2022-07-13 22:40:02,554 INFO L226 Difference]: Without dead ends: 191 [2022-07-13 22:40:02,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:40:02,555 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 280 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:02,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 737 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 22:40:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-13 22:40:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2022-07-13 22:40:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 125 states have (on average 1.24) internal successors, (155), 126 states have internal predecessors, (155), 48 states have call successors, (48), 15 states have call predecessors, (48), 15 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2022-07-13 22:40:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 254 transitions. [2022-07-13 22:40:02,577 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 254 transitions. Word has length 70 [2022-07-13 22:40:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:02,577 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 254 transitions. [2022-07-13 22:40:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 22:40:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 254 transitions. [2022-07-13 22:40:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 22:40:02,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:02,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:40:02,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 236283433, now seen corresponding path program 1 times [2022-07-13 22:40:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:02,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368150597] [2022-07-13 22:40:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:40:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:40:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:40:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:40:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 22:40:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368150597] [2022-07-13 22:40:03,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368150597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:03,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:03,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:40:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362611470] [2022-07-13 22:40:03,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:40:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:40:03,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:40:03,008 INFO L87 Difference]: Start difference. First operand 189 states and 254 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 22:40:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:04,012 INFO L93 Difference]: Finished difference Result 259 states and 359 transitions. [2022-07-13 22:40:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:40:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 76 [2022-07-13 22:40:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:04,014 INFO L225 Difference]: With dead ends: 259 [2022-07-13 22:40:04,014 INFO L226 Difference]: Without dead ends: 257 [2022-07-13 22:40:04,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:40:04,016 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 124 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:04,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 687 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 22:40:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-13 22:40:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 215. [2022-07-13 22:40:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 144 states have (on average 1.25) internal successors, (180), 146 states have internal predecessors, (180), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (58), 52 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-13 22:40:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 292 transitions. [2022-07-13 22:40:04,028 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 292 transitions. Word has length 76 [2022-07-13 22:40:04,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:04,028 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 292 transitions. [2022-07-13 22:40:04,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 22:40:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 292 transitions. [2022-07-13 22:40:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 22:40:04,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:04,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:40:04,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash 618370320, now seen corresponding path program 1 times [2022-07-13 22:40:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:04,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144614866] [2022-07-13 22:40:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:40:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:40:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:40:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:40:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 22:40:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144614866] [2022-07-13 22:40:04,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144614866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:04,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:04,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:40:04,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450775307] [2022-07-13 22:40:04,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:40:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:40:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:40:04,217 INFO L87 Difference]: Start difference. First operand 215 states and 292 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 22:40:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:04,648 INFO L93 Difference]: Finished difference Result 352 states and 488 transitions. [2022-07-13 22:40:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:40:04,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-07-13 22:40:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:04,651 INFO L225 Difference]: With dead ends: 352 [2022-07-13 22:40:04,651 INFO L226 Difference]: Without dead ends: 290 [2022-07-13 22:40:04,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:40:04,652 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 98 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:04,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 525 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:40:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-07-13 22:40:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 271. [2022-07-13 22:40:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 184 states have (on average 1.25) internal successors, (230), 186 states have internal predecessors, (230), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2022-07-13 22:40:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 376 transitions. [2022-07-13 22:40:04,664 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 376 transitions. Word has length 77 [2022-07-13 22:40:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:04,665 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 376 transitions. [2022-07-13 22:40:04,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 22:40:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 376 transitions. [2022-07-13 22:40:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-13 22:40:04,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:04,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:40:04,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash 382756981, now seen corresponding path program 1 times [2022-07-13 22:40:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:04,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510324466] [2022-07-13 22:40:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:04,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:40:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:40:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:40:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:40:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 22:40:05,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:05,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510324466] [2022-07-13 22:40:05,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510324466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:05,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:05,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:40:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298866178] [2022-07-13 22:40:05,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:05,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:05,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:40:05,182 INFO L87 Difference]: Start difference. First operand 271 states and 376 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 22:40:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:06,224 INFO L93 Difference]: Finished difference Result 534 states and 761 transitions. [2022-07-13 22:40:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:40:06,225 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 82 [2022-07-13 22:40:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:06,226 INFO L225 Difference]: With dead ends: 534 [2022-07-13 22:40:06,226 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 22:40:06,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:40:06,228 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 276 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:06,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 785 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 22:40:06,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 22:40:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 308. [2022-07-13 22:40:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 209 states have internal predecessors, (257), 84 states have call successors, (84), 16 states have call predecessors, (84), 17 states have return successors, (98), 82 states have call predecessors, (98), 83 states have call successors, (98) [2022-07-13 22:40:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 439 transitions. [2022-07-13 22:40:06,246 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 439 transitions. Word has length 82 [2022-07-13 22:40:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:06,246 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 439 transitions. [2022-07-13 22:40:06,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 22:40:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 439 transitions. [2022-07-13 22:40:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-13 22:40:06,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:06,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:06,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:40:06,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash 158004605, now seen corresponding path program 1 times [2022-07-13 22:40:06,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:06,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114659403] [2022-07-13 22:40:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:40:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:40:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:40:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 22:40:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 22:40:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114659403] [2022-07-13 22:40:06,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114659403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126309214] [2022-07-13 22:40:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:06,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:06,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:06,505 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) [2022-07-13 22:40:06,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:40:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:06,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2653 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:40:06,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 22:40:07,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:40:07,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126309214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:07,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:40:07,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-13 22:40:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004661441] [2022-07-13 22:40:07,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:07,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:40:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:07,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:40:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:40:07,057 INFO L87 Difference]: Start difference. First operand 308 states and 439 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:40:07,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:07,312 INFO L93 Difference]: Finished difference Result 582 states and 863 transitions. [2022-07-13 22:40:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:40:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-07-13 22:40:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:07,314 INFO L225 Difference]: With dead ends: 582 [2022-07-13 22:40:07,314 INFO L226 Difference]: Without dead ends: 326 [2022-07-13 22:40:07,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:40:07,316 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 40 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:07,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 850 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-07-13 22:40:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-13 22:40:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 313. [2022-07-13 22:40:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 211 states have (on average 1.2511848341232228) internal successors, (264), 214 states have internal predecessors, (264), 84 states have call successors, (84), 16 states have call predecessors, (84), 17 states have return successors, (98), 82 states have call predecessors, (98), 83 states have call successors, (98) [2022-07-13 22:40:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 446 transitions. [2022-07-13 22:40:07,331 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 446 transitions. Word has length 86 [2022-07-13 22:40:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 446 transitions. [2022-07-13 22:40:07,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:40:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 446 transitions. [2022-07-13 22:40:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-13 22:40:07,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:07,333 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:07,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:07,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:07,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1696344635, now seen corresponding path program 1 times [2022-07-13 22:40:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299793931] [2022-07-13 22:40:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:40:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:40:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:40:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:40:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 22:40:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 22:40:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299793931] [2022-07-13 22:40:07,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299793931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938481101] [2022-07-13 22:40:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:07,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:07,779 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) [2022-07-13 22:40:07,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:40:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-13 22:40:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 22:40:08,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:40:08,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938481101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:08,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:40:08,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 22:40:08,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700494388] [2022-07-13 22:40:08,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:08,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:40:08,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:40:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:40:08,219 INFO L87 Difference]: Start difference. First operand 313 states and 446 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 22:40:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:08,343 INFO L93 Difference]: Finished difference Result 579 states and 839 transitions. [2022-07-13 22:40:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:40:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-07-13 22:40:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:08,346 INFO L225 Difference]: With dead ends: 579 [2022-07-13 22:40:08,346 INFO L226 Difference]: Without dead ends: 318 [2022-07-13 22:40:08,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:40:08,349 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 12 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:08,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1786 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:40:08,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-13 22:40:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2022-07-13 22:40:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 215 states have (on average 1.2465116279069768) internal successors, (268), 219 states have internal predecessors, (268), 84 states have call successors, (84), 16 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2022-07-13 22:40:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 459 transitions. [2022-07-13 22:40:08,371 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 459 transitions. Word has length 86 [2022-07-13 22:40:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:08,371 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 459 transitions. [2022-07-13 22:40:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 22:40:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 459 transitions. [2022-07-13 22:40:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 22:40:08,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:08,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:08,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:08,591 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,SelfDestructingSolverStorable8 [2022-07-13 22:40:08,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1167977888, now seen corresponding path program 1 times [2022-07-13 22:40:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:08,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056598302] [2022-07-13 22:40:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 22:40:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:08,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056598302] [2022-07-13 22:40:08,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056598302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:08,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:08,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:40:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334211960] [2022-07-13 22:40:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:08,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:40:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:40:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:40:08,768 INFO L87 Difference]: Start difference. First operand 318 states and 459 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:40:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:09,144 INFO L93 Difference]: Finished difference Result 589 states and 869 transitions. [2022-07-13 22:40:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:40:09,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-13 22:40:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:09,146 INFO L225 Difference]: With dead ends: 589 [2022-07-13 22:40:09,146 INFO L226 Difference]: Without dead ends: 323 [2022-07-13 22:40:09,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:40:09,148 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 87 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:09,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 525 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:40:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-13 22:40:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 320. [2022-07-13 22:40:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 217 states have (on average 1.2442396313364055) internal successors, (270), 221 states have internal predecessors, (270), 84 states have call successors, (84), 16 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2022-07-13 22:40:09,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 461 transitions. [2022-07-13 22:40:09,163 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 461 transitions. Word has length 88 [2022-07-13 22:40:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:09,163 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 461 transitions. [2022-07-13 22:40:09,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:40:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 461 transitions. [2022-07-13 22:40:09,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 22:40:09,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:09,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:40:09,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 852658660, now seen corresponding path program 1 times [2022-07-13 22:40:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:09,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430551103] [2022-07-13 22:40:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 22:40:09,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:09,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430551103] [2022-07-13 22:40:09,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430551103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:09,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:09,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:40:09,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445022309] [2022-07-13 22:40:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:40:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:40:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:40:09,314 INFO L87 Difference]: Start difference. First operand 320 states and 461 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:40:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:09,695 INFO L93 Difference]: Finished difference Result 605 states and 902 transitions. [2022-07-13 22:40:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:40:09,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-13 22:40:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:09,697 INFO L225 Difference]: With dead ends: 605 [2022-07-13 22:40:09,698 INFO L226 Difference]: Without dead ends: 337 [2022-07-13 22:40:09,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:40:09,699 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 102 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:09,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 542 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:40:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-07-13 22:40:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 320. [2022-07-13 22:40:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 217 states have (on average 1.23963133640553) internal successors, (269), 221 states have internal predecessors, (269), 84 states have call successors, (84), 16 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2022-07-13 22:40:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 460 transitions. [2022-07-13 22:40:09,716 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 460 transitions. Word has length 88 [2022-07-13 22:40:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:09,716 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 460 transitions. [2022-07-13 22:40:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:40:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 460 transitions. [2022-07-13 22:40:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 22:40:09,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:09,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 22:40:09,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:40:09,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2113575910, now seen corresponding path program 1 times [2022-07-13 22:40:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:09,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34685803] [2022-07-13 22:40:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 22:40:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:10,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34685803] [2022-07-13 22:40:10,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34685803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:10,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:10,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:40:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095883314] [2022-07-13 22:40:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:10,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:40:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:40:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:40:10,264 INFO L87 Difference]: Start difference. First operand 320 states and 460 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 22:40:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:11,669 INFO L93 Difference]: Finished difference Result 335 states and 480 transitions. [2022-07-13 22:40:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:40:11,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 88 [2022-07-13 22:40:11,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:11,672 INFO L225 Difference]: With dead ends: 335 [2022-07-13 22:40:11,672 INFO L226 Difference]: Without dead ends: 333 [2022-07-13 22:40:11,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:40:11,673 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 181 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:11,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 801 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 22:40:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-13 22:40:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 324. [2022-07-13 22:40:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 220 states have (on average 1.2363636363636363) internal successors, (272), 224 states have internal predecessors, (272), 84 states have call successors, (84), 17 states have call predecessors, (84), 19 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2022-07-13 22:40:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 463 transitions. [2022-07-13 22:40:11,690 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 463 transitions. Word has length 88 [2022-07-13 22:40:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:11,690 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 463 transitions. [2022-07-13 22:40:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 22:40:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 463 transitions. [2022-07-13 22:40:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 22:40:11,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:11,692 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-13 22:40:11,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:40:11,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1375966178, now seen corresponding path program 1 times [2022-07-13 22:40:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354283428] [2022-07-13 22:40:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:40:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 22:40:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354283428] [2022-07-13 22:40:11,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354283428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:11,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:11,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:40:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134657900] [2022-07-13 22:40:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:40:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:40:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:40:11,994 INFO L87 Difference]: Start difference. First operand 324 states and 463 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 22:40:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:13,070 INFO L93 Difference]: Finished difference Result 673 states and 984 transitions. [2022-07-13 22:40:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:40:13,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-07-13 22:40:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:13,073 INFO L225 Difference]: With dead ends: 673 [2022-07-13 22:40:13,073 INFO L226 Difference]: Without dead ends: 484 [2022-07-13 22:40:13,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:40:13,074 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 278 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:13,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1018 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:40:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-13 22:40:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 432. [2022-07-13 22:40:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 300 states have (on average 1.24) internal successors, (372), 304 states have internal predecessors, (372), 110 states have call successors, (110), 18 states have call predecessors, (110), 21 states have return successors, (153), 109 states have call predecessors, (153), 109 states have call successors, (153) [2022-07-13 22:40:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2022-07-13 22:40:13,104 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 89 [2022-07-13 22:40:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:13,104 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2022-07-13 22:40:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 22:40:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2022-07-13 22:40:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 22:40:13,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:13,106 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-13 22:40:13,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:40:13,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 162373852, now seen corresponding path program 1 times [2022-07-13 22:40:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:13,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142533011] [2022-07-13 22:40:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:13,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:40:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 22:40:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:13,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142533011] [2022-07-13 22:40:13,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142533011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:13,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:13,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:40:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990551174] [2022-07-13 22:40:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:13,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:40:13,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:40:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:40:13,729 INFO L87 Difference]: Start difference. First operand 432 states and 635 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-13 22:40:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:15,004 INFO L93 Difference]: Finished difference Result 487 states and 728 transitions. [2022-07-13 22:40:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:40:15,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 89 [2022-07-13 22:40:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:15,007 INFO L225 Difference]: With dead ends: 487 [2022-07-13 22:40:15,007 INFO L226 Difference]: Without dead ends: 485 [2022-07-13 22:40:15,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:40:15,008 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 335 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:15,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 672 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 22:40:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-13 22:40:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 444. [2022-07-13 22:40:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 309 states have (on average 1.2394822006472492) internal successors, (383), 314 states have internal predecessors, (383), 112 states have call successors, (112), 19 states have call predecessors, (112), 22 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2022-07-13 22:40:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 650 transitions. [2022-07-13 22:40:15,044 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 650 transitions. Word has length 89 [2022-07-13 22:40:15,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:15,045 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 650 transitions. [2022-07-13 22:40:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-13 22:40:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 650 transitions. [2022-07-13 22:40:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 22:40:15,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:15,047 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 22:40:15,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:40:15,047 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash 45770096, now seen corresponding path program 1 times [2022-07-13 22:40:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:15,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119085246] [2022-07-13 22:40:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:40:15,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119085246] [2022-07-13 22:40:15,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119085246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:15,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:15,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:40:15,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425250609] [2022-07-13 22:40:15,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:40:15,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:40:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:40:15,389 INFO L87 Difference]: Start difference. First operand 444 states and 650 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 22:40:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:16,356 INFO L93 Difference]: Finished difference Result 463 states and 681 transitions. [2022-07-13 22:40:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:40:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 94 [2022-07-13 22:40:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:16,368 INFO L225 Difference]: With dead ends: 463 [2022-07-13 22:40:16,368 INFO L226 Difference]: Without dead ends: 461 [2022-07-13 22:40:16,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:40:16,374 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 218 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:16,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 730 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 22:40:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-07-13 22:40:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 448. [2022-07-13 22:40:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 312 states have (on average 1.2371794871794872) internal successors, (386), 317 states have internal predecessors, (386), 112 states have call successors, (112), 20 states have call predecessors, (112), 23 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2022-07-13 22:40:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 653 transitions. [2022-07-13 22:40:16,408 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 653 transitions. Word has length 94 [2022-07-13 22:40:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:16,408 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 653 transitions. [2022-07-13 22:40:16,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-13 22:40:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 653 transitions. [2022-07-13 22:40:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 22:40:16,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:16,410 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:40:16,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 315923145, now seen corresponding path program 1 times [2022-07-13 22:40:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:16,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644477443] [2022-07-13 22:40:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:16,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:40:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:40:16,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:16,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644477443] [2022-07-13 22:40:16,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644477443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:16,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:16,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:40:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811134872] [2022-07-13 22:40:16,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:16,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:40:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:40:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:40:16,589 INFO L87 Difference]: Start difference. First operand 448 states and 653 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-13 22:40:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:17,223 INFO L93 Difference]: Finished difference Result 527 states and 756 transitions. [2022-07-13 22:40:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:40:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 93 [2022-07-13 22:40:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:17,225 INFO L225 Difference]: With dead ends: 527 [2022-07-13 22:40:17,226 INFO L226 Difference]: Without dead ends: 452 [2022-07-13 22:40:17,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:40:17,227 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 173 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:17,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 514 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:40:17,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-07-13 22:40:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2022-07-13 22:40:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 312 states have (on average 1.2243589743589745) internal successors, (382), 317 states have internal predecessors, (382), 112 states have call successors, (112), 20 states have call predecessors, (112), 23 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2022-07-13 22:40:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 649 transitions. [2022-07-13 22:40:17,258 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 649 transitions. Word has length 93 [2022-07-13 22:40:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:17,258 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 649 transitions. [2022-07-13 22:40:17,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-13 22:40:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 649 transitions. [2022-07-13 22:40:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 22:40:17,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:17,260 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-13 22:40:17,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:40:17,261 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 651202792, now seen corresponding path program 1 times [2022-07-13 22:40:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:17,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587027511] [2022-07-13 22:40:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:40:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:40:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 22:40:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:18,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587027511] [2022-07-13 22:40:18,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587027511] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:18,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064256285] [2022-07-13 22:40:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:18,368 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) [2022-07-13 22:40:18,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:40:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:19,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 75 conjunts are in the unsatisfiable core [2022-07-13 22:40:19,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:19,611 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 [2022-07-13 22:40:19,757 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:40:19,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-13 22:40:19,765 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 [2022-07-13 22:40:19,936 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:40:19,937 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 15 treesize of output 15 [2022-07-13 22:40:19,988 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:40:19,988 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 22 treesize of output 27 [2022-07-13 22:40:20,027 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:40:20,028 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 22 treesize of output 27 [2022-07-13 22:40:20,223 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:40:20,223 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 26 treesize of output 10 [2022-07-13 22:40:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 22:40:20,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:20,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064256285] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:20,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:40:20,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 30 [2022-07-13 22:40:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80100446] [2022-07-13 22:40:20,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 22:40:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 22:40:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1273, Unknown=6, NotChecked=0, Total=1406 [2022-07-13 22:40:20,890 INFO L87 Difference]: Start difference. First operand 448 states and 649 transitions. Second operand has 30 states, 25 states have (on average 4.2) internal successors, (105), 26 states have internal predecessors, (105), 16 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-13 22:40:23,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:23,834 INFO L93 Difference]: Finished difference Result 546 states and 784 transitions. [2022-07-13 22:40:23,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 22:40:23,834 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 4.2) internal successors, (105), 26 states have internal predecessors, (105), 16 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) Word has length 95 [2022-07-13 22:40:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:23,849 INFO L225 Difference]: With dead ends: 546 [2022-07-13 22:40:23,850 INFO L226 Difference]: Without dead ends: 528 [2022-07-13 22:40:23,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 124 SyntacticMatches, 14 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=279, Invalid=2471, Unknown=6, NotChecked=0, Total=2756 [2022-07-13 22:40:23,852 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 473 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 4072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 814 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:23,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1265 Invalid, 4072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2955 Invalid, 0 Unknown, 814 Unchecked, 2.4s Time] [2022-07-13 22:40:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-13 22:40:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-13 22:40:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 338 states have (on average 1.2100591715976332) internal successors, (409), 343 states have internal predecessors, (409), 113 states have call successors, (113), 24 states have call predecessors, (113), 27 states have return successors, (145), 111 states have call predecessors, (145), 112 states have call successors, (145) [2022-07-13 22:40:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 667 transitions. [2022-07-13 22:40:23,893 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 667 transitions. Word has length 95 [2022-07-13 22:40:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:23,893 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 667 transitions. [2022-07-13 22:40:23,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 4.2) internal successors, (105), 26 states have internal predecessors, (105), 16 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-13 22:40:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 667 transitions. [2022-07-13 22:40:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 22:40:23,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:23,895 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-13 22:40:23,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:24,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:24,119 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1202646798, now seen corresponding path program 1 times [2022-07-13 22:40:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:24,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18674007] [2022-07-13 22:40:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:40:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:40:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:40:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-13 22:40:24,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:24,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18674007] [2022-07-13 22:40:24,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18674007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:24,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:24,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:40:24,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811082136] [2022-07-13 22:40:24,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:24,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:24,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:24,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:24,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:40:24,700 INFO L87 Difference]: Start difference. First operand 479 states and 667 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 7 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-13 22:40:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:25,816 INFO L93 Difference]: Finished difference Result 521 states and 735 transitions. [2022-07-13 22:40:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:40:25,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 7 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 101 [2022-07-13 22:40:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:25,819 INFO L225 Difference]: With dead ends: 521 [2022-07-13 22:40:25,819 INFO L226 Difference]: Without dead ends: 519 [2022-07-13 22:40:25,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:40:25,819 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 287 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:25,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 697 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:40:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-07-13 22:40:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 485. [2022-07-13 22:40:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 342 states have (on average 1.2076023391812865) internal successors, (413), 347 states have internal predecessors, (413), 114 states have call successors, (114), 25 states have call predecessors, (114), 28 states have return successors, (146), 112 states have call predecessors, (146), 113 states have call successors, (146) [2022-07-13 22:40:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 673 transitions. [2022-07-13 22:40:25,854 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 673 transitions. Word has length 101 [2022-07-13 22:40:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:25,854 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 673 transitions. [2022-07-13 22:40:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 7 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-13 22:40:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 673 transitions. [2022-07-13 22:40:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 22:40:25,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:25,856 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2022-07-13 22:40:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:40:25,856 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash -849673561, now seen corresponding path program 1 times [2022-07-13 22:40:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565240463] [2022-07-13 22:40:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 22:40:26,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:26,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565240463] [2022-07-13 22:40:26,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565240463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:26,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:26,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 22:40:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806704254] [2022-07-13 22:40:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:26,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:40:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:40:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:40:26,208 INFO L87 Difference]: Start difference. First operand 485 states and 673 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 22:40:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:27,716 INFO L93 Difference]: Finished difference Result 539 states and 738 transitions. [2022-07-13 22:40:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:40:27,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 104 [2022-07-13 22:40:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:27,719 INFO L225 Difference]: With dead ends: 539 [2022-07-13 22:40:27,719 INFO L226 Difference]: Without dead ends: 493 [2022-07-13 22:40:27,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:40:27,720 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 209 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:27,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1039 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 22:40:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-07-13 22:40:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 483. [2022-07-13 22:40:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 341 states have (on average 1.2052785923753666) internal successors, (411), 346 states have internal predecessors, (411), 113 states have call successors, (113), 25 states have call predecessors, (113), 28 states have return successors, (145), 111 states have call predecessors, (145), 112 states have call successors, (145) [2022-07-13 22:40:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 669 transitions. [2022-07-13 22:40:27,757 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 669 transitions. Word has length 104 [2022-07-13 22:40:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:27,757 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 669 transitions. [2022-07-13 22:40:27,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 22:40:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 669 transitions. [2022-07-13 22:40:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 22:40:27,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:27,759 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2022-07-13 22:40:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:40:27,759 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2065827287, now seen corresponding path program 1 times [2022-07-13 22:40:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:27,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61128031] [2022-07-13 22:40:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 22:40:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:28,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61128031] [2022-07-13 22:40:28,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61128031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:28,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:28,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-13 22:40:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034139715] [2022-07-13 22:40:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:28,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 22:40:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 22:40:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:40:28,245 INFO L87 Difference]: Start difference. First operand 483 states and 669 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 14 states have internal predecessors, (58), 7 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-13 22:40:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:31,179 INFO L93 Difference]: Finished difference Result 678 states and 953 transitions. [2022-07-13 22:40:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:40:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 14 states have internal predecessors, (58), 7 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 104 [2022-07-13 22:40:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:31,182 INFO L225 Difference]: With dead ends: 678 [2022-07-13 22:40:31,182 INFO L226 Difference]: Without dead ends: 623 [2022-07-13 22:40:31,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:40:31,183 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 585 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 3892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:31,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1807 Invalid, 3892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 22:40:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-07-13 22:40:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 535. [2022-07-13 22:40:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 382 states have (on average 1.2015706806282722) internal successors, (459), 388 states have internal predecessors, (459), 122 states have call successors, (122), 27 states have call predecessors, (122), 30 states have return successors, (155), 119 states have call predecessors, (155), 121 states have call successors, (155) [2022-07-13 22:40:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 736 transitions. [2022-07-13 22:40:31,229 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 736 transitions. Word has length 104 [2022-07-13 22:40:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:31,229 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 736 transitions. [2022-07-13 22:40:31,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 14 states have internal predecessors, (58), 7 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-13 22:40:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 736 transitions. [2022-07-13 22:40:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 22:40:31,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:31,231 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:31,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:40:31,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1144776342, now seen corresponding path program 1 times [2022-07-13 22:40:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:31,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268355088] [2022-07-13 22:40:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:31,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:40:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:40:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:40:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 22:40:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:40:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:40:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:40:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:40:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:40:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:40:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-13 22:40:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268355088] [2022-07-13 22:40:31,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268355088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936507463] [2022-07-13 22:40:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:31,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:31,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:31,616 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) [2022-07-13 22:40:31,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:40:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:32,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 22:40:32,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:40:32,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:40:32,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936507463] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:32,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:32,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 23 [2022-07-13 22:40:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357902287] [2022-07-13 22:40:32,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 22:40:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 22:40:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-07-13 22:40:32,259 INFO L87 Difference]: Start difference. First operand 535 states and 736 transitions. Second operand has 23 states, 21 states have (on average 4.285714285714286) internal successors, (90), 17 states have internal predecessors, (90), 9 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (22), 11 states have call predecessors, (22), 9 states have call successors, (22) [2022-07-13 22:40:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:34,137 INFO L93 Difference]: Finished difference Result 814 states and 1071 transitions. [2022-07-13 22:40:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:40:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.285714285714286) internal successors, (90), 17 states have internal predecessors, (90), 9 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (22), 11 states have call predecessors, (22), 9 states have call successors, (22) Word has length 117 [2022-07-13 22:40:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:34,139 INFO L225 Difference]: With dead ends: 814 [2022-07-13 22:40:34,139 INFO L226 Difference]: Without dead ends: 368 [2022-07-13 22:40:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 22:40:34,141 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 107 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:34,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1502 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 22:40:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-13 22:40:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 361. [2022-07-13 22:40:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 269 states have (on average 1.1635687732342008) internal successors, (313), 276 states have internal predecessors, (313), 63 states have call successors, (63), 25 states have call predecessors, (63), 28 states have return successors, (86), 59 states have call predecessors, (86), 62 states have call successors, (86) [2022-07-13 22:40:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 462 transitions. [2022-07-13 22:40:34,170 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 462 transitions. Word has length 117 [2022-07-13 22:40:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:34,170 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 462 transitions. [2022-07-13 22:40:34,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.285714285714286) internal successors, (90), 17 states have internal predecessors, (90), 9 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (22), 11 states have call predecessors, (22), 9 states have call successors, (22) [2022-07-13 22:40:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 462 transitions. [2022-07-13 22:40:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 22:40:34,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:34,172 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:34,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 22:40:34,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:34,391 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1593488297, now seen corresponding path program 1 times [2022-07-13 22:40:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:34,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602849508] [2022-07-13 22:40:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:40:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:40:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:40:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:40:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 22:40:35,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:35,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602849508] [2022-07-13 22:40:35,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602849508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:35,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:35,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-13 22:40:35,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778187623] [2022-07-13 22:40:35,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:35,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 22:40:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 22:40:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:40:35,984 INFO L87 Difference]: Start difference. First operand 361 states and 462 transitions. Second operand has 18 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 9 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-13 22:40:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:38,911 INFO L93 Difference]: Finished difference Result 384 states and 492 transitions. [2022-07-13 22:40:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:40:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 9 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 111 [2022-07-13 22:40:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:38,914 INFO L225 Difference]: With dead ends: 384 [2022-07-13 22:40:38,914 INFO L226 Difference]: Without dead ends: 382 [2022-07-13 22:40:38,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2022-07-13 22:40:38,914 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 207 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:38,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 871 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 22:40:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-13 22:40:38,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 374. [2022-07-13 22:40:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 278 states have (on average 1.1654676258992807) internal successors, (324), 285 states have internal predecessors, (324), 65 states have call successors, (65), 27 states have call predecessors, (65), 30 states have return successors, (88), 61 states have call predecessors, (88), 64 states have call successors, (88) [2022-07-13 22:40:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 477 transitions. [2022-07-13 22:40:38,945 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 477 transitions. Word has length 111 [2022-07-13 22:40:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:38,946 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 477 transitions. [2022-07-13 22:40:38,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.0) internal successors, (60), 14 states have internal predecessors, (60), 9 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-13 22:40:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 477 transitions. [2022-07-13 22:40:38,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 22:40:38,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:38,947 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:38,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:40:38,948 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2061916068, now seen corresponding path program 1 times [2022-07-13 22:40:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:38,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841693224] [2022-07-13 22:40:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:40:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:40:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:40:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:40:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 22:40:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841693224] [2022-07-13 22:40:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841693224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:39,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:39,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:40:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330242986] [2022-07-13 22:40:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:39,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:40:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:40:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:40:39,130 INFO L87 Difference]: Start difference. First operand 374 states and 477 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-13 22:40:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:39,337 INFO L93 Difference]: Finished difference Result 443 states and 550 transitions. [2022-07-13 22:40:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:40:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 120 [2022-07-13 22:40:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:39,339 INFO L225 Difference]: With dead ends: 443 [2022-07-13 22:40:39,339 INFO L226 Difference]: Without dead ends: 303 [2022-07-13 22:40:39,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:40:39,340 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 92 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:39,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 268 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:40:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-13 22:40:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-07-13 22:40:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 237 states have (on average 1.1476793248945147) internal successors, (272), 241 states have internal predecessors, (272), 40 states have call successors, (40), 23 states have call predecessors, (40), 25 states have return successors, (54), 38 states have call predecessors, (54), 39 states have call successors, (54) [2022-07-13 22:40:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 366 transitions. [2022-07-13 22:40:39,365 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 366 transitions. Word has length 120 [2022-07-13 22:40:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:39,365 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 366 transitions. [2022-07-13 22:40:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-13 22:40:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 366 transitions. [2022-07-13 22:40:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 22:40:39,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:39,367 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:40:39,367 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1894117656, now seen corresponding path program 1 times [2022-07-13 22:40:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:39,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273831615] [2022-07-13 22:40:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:40:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-13 22:40:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:40,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273831615] [2022-07-13 22:40:40,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273831615] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:40,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168290423] [2022-07-13 22:40:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:40,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:40,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:40,040 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) [2022-07-13 22:40:40,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:40:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:40,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-13 22:40:40,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:40,532 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 [2022-07-13 22:40:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:40:41,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:40:41,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168290423] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:41,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:41,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 27 [2022-07-13 22:40:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735827492] [2022-07-13 22:40:41,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:41,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:40:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:40:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:40:41,621 INFO L87 Difference]: Start difference. First operand 303 states and 366 transitions. Second operand has 27 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (35), 4 states have call predecessors, (35), 5 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-07-13 22:40:42,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:42,463 INFO L93 Difference]: Finished difference Result 423 states and 510 transitions. [2022-07-13 22:40:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 22:40:42,463 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (35), 4 states have call predecessors, (35), 5 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 118 [2022-07-13 22:40:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:42,465 INFO L225 Difference]: With dead ends: 423 [2022-07-13 22:40:42,465 INFO L226 Difference]: Without dead ends: 394 [2022-07-13 22:40:42,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 237 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 22:40:42,466 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 205 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:42,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 736 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 680 Invalid, 0 Unknown, 381 Unchecked, 0.5s Time] [2022-07-13 22:40:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-13 22:40:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 383. [2022-07-13 22:40:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 296 states have (on average 1.1283783783783783) internal successors, (334), 302 states have internal predecessors, (334), 54 states have call successors, (54), 30 states have call predecessors, (54), 32 states have return successors, (73), 50 states have call predecessors, (73), 53 states have call successors, (73) [2022-07-13 22:40:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 461 transitions. [2022-07-13 22:40:42,502 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 461 transitions. Word has length 118 [2022-07-13 22:40:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:42,503 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 461 transitions. [2022-07-13 22:40:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 6.12) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (35), 4 states have call predecessors, (35), 5 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-07-13 22:40:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 461 transitions. [2022-07-13 22:40:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 22:40:42,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:42,505 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:42,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-13 22:40:42,724 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1232259362, now seen corresponding path program 1 times [2022-07-13 22:40:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:42,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891478370] [2022-07-13 22:40:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:40:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 22:40:43,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891478370] [2022-07-13 22:40:43,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891478370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631791120] [2022-07-13 22:40:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:43,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:43,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:43,084 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) [2022-07-13 22:40:43,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:40:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:43,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 22:40:43,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:40:44,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:45,063 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-13 22:40:45,063 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 39 treesize of output 1 [2022-07-13 22:40:45,170 INFO L356 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-07-13 22:40:45,171 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 40 treesize of output 36 [2022-07-13 22:40:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:40:45,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631791120] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:45,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:45,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 33 [2022-07-13 22:40:45,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511989872] [2022-07-13 22:40:45,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:45,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 22:40:45,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 22:40:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 22:40:45,256 INFO L87 Difference]: Start difference. First operand 383 states and 461 transitions. Second operand has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 32 states have internal predecessors, (162), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-13 22:40:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:46,903 INFO L93 Difference]: Finished difference Result 465 states and 539 transitions. [2022-07-13 22:40:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 22:40:46,903 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 32 states have internal predecessors, (162), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 118 [2022-07-13 22:40:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:46,904 INFO L225 Difference]: With dead ends: 465 [2022-07-13 22:40:46,905 INFO L226 Difference]: Without dead ends: 455 [2022-07-13 22:40:46,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 230 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=480, Invalid=2276, Unknown=0, NotChecked=0, Total=2756 [2022-07-13 22:40:46,906 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 292 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 583 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:46,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 938 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1354 Invalid, 0 Unknown, 583 Unchecked, 0.9s Time] [2022-07-13 22:40:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-07-13 22:40:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 428. [2022-07-13 22:40:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 330 states have (on average 1.112121212121212) internal successors, (367), 336 states have internal predecessors, (367), 54 states have call successors, (54), 41 states have call predecessors, (54), 43 states have return successors, (71), 50 states have call predecessors, (71), 53 states have call successors, (71) [2022-07-13 22:40:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 492 transitions. [2022-07-13 22:40:46,946 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 492 transitions. Word has length 118 [2022-07-13 22:40:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:46,946 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 492 transitions. [2022-07-13 22:40:46,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 32 states have internal predecessors, (162), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-07-13 22:40:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 492 transitions. [2022-07-13 22:40:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 22:40:46,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:46,948 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:46,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 22:40:47,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:47,163 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash -974093924, now seen corresponding path program 1 times [2022-07-13 22:40:47,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:47,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358524526] [2022-07-13 22:40:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:40:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-13 22:40:47,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:47,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358524526] [2022-07-13 22:40:47,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358524526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:47,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:47,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:40:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297098647] [2022-07-13 22:40:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:40:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:40:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:40:47,351 INFO L87 Difference]: Start difference. First operand 428 states and 492 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 22:40:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:47,654 INFO L93 Difference]: Finished difference Result 677 states and 784 transitions. [2022-07-13 22:40:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:40:47,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-07-13 22:40:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:47,656 INFO L225 Difference]: With dead ends: 677 [2022-07-13 22:40:47,656 INFO L226 Difference]: Without dead ends: 429 [2022-07-13 22:40:47,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:40:47,657 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 72 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:47,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 323 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:40:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-13 22:40:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 424. [2022-07-13 22:40:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 326 states have (on average 1.1042944785276074) internal successors, (360), 332 states have internal predecessors, (360), 54 states have call successors, (54), 41 states have call predecessors, (54), 43 states have return successors, (71), 50 states have call predecessors, (71), 53 states have call successors, (71) [2022-07-13 22:40:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 485 transitions. [2022-07-13 22:40:47,711 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 485 transitions. Word has length 118 [2022-07-13 22:40:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:47,712 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 485 transitions. [2022-07-13 22:40:47,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 22:40:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 485 transitions. [2022-07-13 22:40:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 22:40:47,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:47,714 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:47,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:40:47,715 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2004869856, now seen corresponding path program 1 times [2022-07-13 22:40:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:47,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786787316] [2022-07-13 22:40:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:40:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:40:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:48,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786787316] [2022-07-13 22:40:48,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786787316] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:48,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446090707] [2022-07-13 22:40:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:48,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:48,142 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) [2022-07-13 22:40:48,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:40:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:48,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:40:48,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:48,572 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 [2022-07-13 22:40:49,228 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 29 treesize of output 17 [2022-07-13 22:40:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:40:49,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:40:49,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446090707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:49,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:40:49,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 21 [2022-07-13 22:40:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62381909] [2022-07-13 22:40:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:49,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:49,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:40:49,258 INFO L87 Difference]: Start difference. First operand 424 states and 485 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-13 22:40:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:49,674 INFO L93 Difference]: Finished difference Result 481 states and 543 transitions. [2022-07-13 22:40:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:40:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 118 [2022-07-13 22:40:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:49,676 INFO L225 Difference]: With dead ends: 481 [2022-07-13 22:40:49,677 INFO L226 Difference]: Without dead ends: 434 [2022-07-13 22:40:49,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 125 SyntacticMatches, 14 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:40:49,677 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 114 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:49,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1113 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 391 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2022-07-13 22:40:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-07-13 22:40:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 384. [2022-07-13 22:40:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 297 states have (on average 1.1043771043771045) internal successors, (328), 302 states have internal predecessors, (328), 47 states have call successors, (47), 37 states have call predecessors, (47), 39 states have return successors, (62), 44 states have call predecessors, (62), 46 states have call successors, (62) [2022-07-13 22:40:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 437 transitions. [2022-07-13 22:40:49,715 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 437 transitions. Word has length 118 [2022-07-13 22:40:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:49,715 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 437 transitions. [2022-07-13 22:40:49,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-13 22:40:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 437 transitions. [2022-07-13 22:40:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 22:40:49,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:49,716 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:49,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:49,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:49,931 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash -571196477, now seen corresponding path program 1 times [2022-07-13 22:40:49,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500075484] [2022-07-13 22:40:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:40:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 22:40:50,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:50,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500075484] [2022-07-13 22:40:50,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500075484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:50,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:50,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:40:50,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623751923] [2022-07-13 22:40:50,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:50,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:50,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:40:50,126 INFO L87 Difference]: Start difference. First operand 384 states and 437 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 22:40:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:50,511 INFO L93 Difference]: Finished difference Result 398 states and 453 transitions. [2022-07-13 22:40:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:40:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2022-07-13 22:40:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:50,513 INFO L225 Difference]: With dead ends: 398 [2022-07-13 22:40:50,513 INFO L226 Difference]: Without dead ends: 387 [2022-07-13 22:40:50,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:40:50,514 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 74 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:50,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 644 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:40:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-07-13 22:40:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 380. [2022-07-13 22:40:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 294 states have (on average 1.1020408163265305) internal successors, (324), 298 states have internal predecessors, (324), 47 states have call successors, (47), 37 states have call predecessors, (47), 38 states have return successors, (56), 44 states have call predecessors, (56), 46 states have call successors, (56) [2022-07-13 22:40:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 427 transitions. [2022-07-13 22:40:50,550 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 427 transitions. Word has length 120 [2022-07-13 22:40:50,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:50,550 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 427 transitions. [2022-07-13 22:40:50,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 22:40:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 427 transitions. [2022-07-13 22:40:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 22:40:50,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:50,552 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:50,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:40:50,552 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 129868101, now seen corresponding path program 1 times [2022-07-13 22:40:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:50,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888355787] [2022-07-13 22:40:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:40:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 22:40:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888355787] [2022-07-13 22:40:50,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888355787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310057119] [2022-07-13 22:40:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:50,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:50,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:50,900 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) [2022-07-13 22:40:50,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:40:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:51,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:40:51,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:51,336 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 [2022-07-13 22:40:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 22:40:51,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:40:51,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310057119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:51,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:40:51,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-07-13 22:40:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600309320] [2022-07-13 22:40:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:51,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:40:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:40:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:40:51,601 INFO L87 Difference]: Start difference. First operand 380 states and 427 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-13 22:40:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:51,768 INFO L93 Difference]: Finished difference Result 420 states and 469 transitions. [2022-07-13 22:40:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:40:51,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 120 [2022-07-13 22:40:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:51,770 INFO L225 Difference]: With dead ends: 420 [2022-07-13 22:40:51,770 INFO L226 Difference]: Without dead ends: 348 [2022-07-13 22:40:51,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:40:51,771 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 80 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:51,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 724 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 96 Invalid, 0 Unknown, 156 Unchecked, 0.1s Time] [2022-07-13 22:40:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-07-13 22:40:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-07-13 22:40:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 270 states have (on average 1.1037037037037036) internal successors, (298), 274 states have internal predecessors, (298), 42 states have call successors, (42), 33 states have call predecessors, (42), 34 states have return successors, (51), 39 states have call predecessors, (51), 41 states have call successors, (51) [2022-07-13 22:40:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 391 transitions. [2022-07-13 22:40:51,801 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 391 transitions. Word has length 120 [2022-07-13 22:40:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:51,802 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 391 transitions. [2022-07-13 22:40:51,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-13 22:40:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 391 transitions. [2022-07-13 22:40:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:40:51,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:51,803 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:51,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:52,011 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,SelfDestructingSolverStorable28 [2022-07-13 22:40:52,011 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:52,012 INFO L85 PathProgramCache]: Analyzing trace with hash -248802790, now seen corresponding path program 1 times [2022-07-13 22:40:52,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:52,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225539733] [2022-07-13 22:40:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:52,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:40:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:40:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:40:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:40:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:40:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:40:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:40:52,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:52,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225539733] [2022-07-13 22:40:52,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225539733] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:52,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604253144] [2022-07-13 22:40:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:52,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:52,407 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) [2022-07-13 22:40:52,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:40:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:52,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 22:40:52,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:40:53,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:54,046 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-13 22:40:54,047 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 31 treesize of output 26 [2022-07-13 22:40:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:40:54,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604253144] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:54,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:54,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 10] total 28 [2022-07-13 22:40:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110138953] [2022-07-13 22:40:54,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 22:40:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 22:40:54,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-07-13 22:40:54,081 INFO L87 Difference]: Start difference. First operand 347 states and 391 transitions. Second operand has 28 states, 28 states have (on average 6.107142857142857) internal successors, (171), 25 states have internal predecessors, (171), 8 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) [2022-07-13 22:40:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:55,468 INFO L93 Difference]: Finished difference Result 419 states and 471 transitions. [2022-07-13 22:40:55,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:40:55,469 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.107142857142857) internal successors, (171), 25 states have internal predecessors, (171), 8 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) Word has length 124 [2022-07-13 22:40:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:55,470 INFO L225 Difference]: With dead ends: 419 [2022-07-13 22:40:55,470 INFO L226 Difference]: Without dead ends: 293 [2022-07-13 22:40:55,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 258 SyntacticMatches, 18 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=228, Invalid=1664, Unknown=0, NotChecked=0, Total=1892 [2022-07-13 22:40:55,471 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 309 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:55,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1296 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1754 Invalid, 0 Unknown, 267 Unchecked, 0.9s Time] [2022-07-13 22:40:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-13 22:40:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 268. [2022-07-13 22:40:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 208 states have (on average 1.1009615384615385) internal successors, (229), 211 states have internal predecessors, (229), 32 states have call successors, (32), 26 states have call predecessors, (32), 27 states have return successors, (38), 30 states have call predecessors, (38), 31 states have call successors, (38) [2022-07-13 22:40:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 299 transitions. [2022-07-13 22:40:55,494 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 299 transitions. Word has length 124 [2022-07-13 22:40:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:55,494 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 299 transitions. [2022-07-13 22:40:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.107142857142857) internal successors, (171), 25 states have internal predecessors, (171), 8 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) [2022-07-13 22:40:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 299 transitions. [2022-07-13 22:40:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 22:40:55,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:55,495 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:55,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:55,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:55,713 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:55,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:55,713 INFO L85 PathProgramCache]: Analyzing trace with hash -322250982, now seen corresponding path program 1 times [2022-07-13 22:40:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:55,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478068137] [2022-07-13 22:40:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:40:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:40:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:40:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:40:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 22:40:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:55,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478068137] [2022-07-13 22:40:55,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478068137] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:55,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794233745] [2022-07-13 22:40:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:55,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:55,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:55,912 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) [2022-07-13 22:40:55,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:40:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:56,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:40:56,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 22:40:56,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:40:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 22:40:56,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794233745] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:40:56,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:40:56,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2022-07-13 22:40:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385278445] [2022-07-13 22:40:56,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:40:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:40:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:40:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:40:56,518 INFO L87 Difference]: Start difference. First operand 268 states and 299 transitions. Second operand has 21 states, 21 states have (on average 6.476190476190476) internal successors, (136), 20 states have internal predecessors, (136), 11 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 11 states have call successors, (33) [2022-07-13 22:40:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:57,122 INFO L93 Difference]: Finished difference Result 506 states and 585 transitions. [2022-07-13 22:40:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:40:57,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.476190476190476) internal successors, (136), 20 states have internal predecessors, (136), 11 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 11 states have call successors, (33) Word has length 125 [2022-07-13 22:40:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:57,124 INFO L225 Difference]: With dead ends: 506 [2022-07-13 22:40:57,124 INFO L226 Difference]: Without dead ends: 326 [2022-07-13 22:40:57,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:40:57,125 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 325 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:57,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 888 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:40:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-13 22:40:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 273. [2022-07-13 22:40:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 210 states have (on average 1.1) internal successors, (231), 216 states have internal predecessors, (231), 34 states have call successors, (34), 26 states have call predecessors, (34), 28 states have return successors, (46), 30 states have call predecessors, (46), 33 states have call successors, (46) [2022-07-13 22:40:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 311 transitions. [2022-07-13 22:40:57,151 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 311 transitions. Word has length 125 [2022-07-13 22:40:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 311 transitions. [2022-07-13 22:40:57,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.476190476190476) internal successors, (136), 20 states have internal predecessors, (136), 11 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 11 states have call successors, (33) [2022-07-13 22:40:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 311 transitions. [2022-07-13 22:40:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 22:40:57,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:57,152 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:57,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:40:57,367 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,SelfDestructingSolverStorable30 [2022-07-13 22:40:57,367 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2061673756, now seen corresponding path program 1 times [2022-07-13 22:40:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818545265] [2022-07-13 22:40:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:40:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:40:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:40:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:40:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:40:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-13 22:40:57,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:57,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818545265] [2022-07-13 22:40:57,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818545265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:40:57,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:40:57,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:40:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943605141] [2022-07-13 22:40:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:40:57,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:40:57,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:40:57,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:40:57,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:40:57,527 INFO L87 Difference]: Start difference. First operand 273 states and 311 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:40:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:40:57,713 INFO L93 Difference]: Finished difference Result 467 states and 527 transitions. [2022-07-13 22:40:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:40:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2022-07-13 22:40:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:40:57,715 INFO L225 Difference]: With dead ends: 467 [2022-07-13 22:40:57,715 INFO L226 Difference]: Without dead ends: 283 [2022-07-13 22:40:57,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:40:57,716 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 58 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:40:57,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 276 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:40:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-13 22:40:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 266. [2022-07-13 22:40:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 206 states have (on average 1.087378640776699) internal successors, (224), 210 states have internal predecessors, (224), 32 states have call successors, (32), 25 states have call predecessors, (32), 27 states have return successors, (38), 30 states have call predecessors, (38), 31 states have call successors, (38) [2022-07-13 22:40:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 294 transitions. [2022-07-13 22:40:57,741 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 294 transitions. Word has length 125 [2022-07-13 22:40:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:40:57,741 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 294 transitions. [2022-07-13 22:40:57,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:40:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 294 transitions. [2022-07-13 22:40:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 22:40:57,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:40:57,743 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:40:57,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:40:57,743 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:40:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:40:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1468877158, now seen corresponding path program 1 times [2022-07-13 22:40:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:40:57,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642729348] [2022-07-13 22:40:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:40:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:40:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:40:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:40:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:40:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:40:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:40:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:40:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:40:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:40:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:40:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:40:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:40:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:40:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:40:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 22:40:58,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:40:58,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642729348] [2022-07-13 22:40:58,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642729348] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:40:58,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247616095] [2022-07-13 22:40:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:40:58,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:40:58,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:40:58,401 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) [2022-07-13 22:40:58,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:40:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:40:58,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-13 22:40:58,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:40:58,871 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 [2022-07-13 22:40:59,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:40:59,263 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-13 22:40:59,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2022-07-13 22:40:59,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:40:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:40:59,472 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:40:59,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 47 [2022-07-13 22:41:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:41:00,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:41:04,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247616095] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:04,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:41:04,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 39 [2022-07-13 22:41:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504394910] [2022-07-13 22:41:04,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:41:04,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-13 22:41:04,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-13 22:41:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1893, Unknown=2, NotChecked=0, Total=2070 [2022-07-13 22:41:04,139 INFO L87 Difference]: Start difference. First operand 266 states and 294 transitions. Second operand has 39 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 15 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) [2022-07-13 22:41:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:06,811 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2022-07-13 22:41:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:41:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 15 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) Word has length 125 [2022-07-13 22:41:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:06,813 INFO L225 Difference]: With dead ends: 314 [2022-07-13 22:41:06,813 INFO L226 Difference]: Without dead ends: 262 [2022-07-13 22:41:06,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 195 SyntacticMatches, 15 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=455, Invalid=5243, Unknown=2, NotChecked=0, Total=5700 [2022-07-13 22:41:06,815 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 200 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 983 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:06,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1548 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2144 Invalid, 0 Unknown, 983 Unchecked, 1.3s Time] [2022-07-13 22:41:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-13 22:41:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 253. [2022-07-13 22:41:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 195 states have (on average 1.087179487179487) internal successors, (212), 196 states have internal predecessors, (212), 31 states have call successors, (31), 26 states have call predecessors, (31), 26 states have return successors, (33), 30 states have call predecessors, (33), 30 states have call successors, (33) [2022-07-13 22:41:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 276 transitions. [2022-07-13 22:41:06,838 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 276 transitions. Word has length 125 [2022-07-13 22:41:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:06,839 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 276 transitions. [2022-07-13 22:41:06,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 3.888888888888889) internal successors, (140), 35 states have internal predecessors, (140), 15 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (26), 12 states have call predecessors, (26), 15 states have call successors, (26) [2022-07-13 22:41:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 276 transitions. [2022-07-13 22:41:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 22:41:06,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:06,840 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:06,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:07,059 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,SelfDestructingSolverStorable32 [2022-07-13 22:41:07,059 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -502750309, now seen corresponding path program 1 times [2022-07-13 22:41:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524642978] [2022-07-13 22:41:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:07,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:41:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:41:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 22:41:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:41:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:41:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:41:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 22:41:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:07,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524642978] [2022-07-13 22:41:07,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524642978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:07,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:07,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:41:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139104530] [2022-07-13 22:41:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:41:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:41:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:41:07,214 INFO L87 Difference]: Start difference. First operand 253 states and 276 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-13 22:41:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:07,434 INFO L93 Difference]: Finished difference Result 389 states and 417 transitions. [2022-07-13 22:41:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:41:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-07-13 22:41:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:07,435 INFO L225 Difference]: With dead ends: 389 [2022-07-13 22:41:07,435 INFO L226 Difference]: Without dead ends: 233 [2022-07-13 22:41:07,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:41:07,436 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 83 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:07,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 295 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:41:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-13 22:41:07,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-07-13 22:41:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 180 states have (on average 1.0666666666666667) internal successors, (192), 181 states have internal predecessors, (192), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 22:41:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions. [2022-07-13 22:41:07,457 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 127 [2022-07-13 22:41:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:07,457 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions. [2022-07-13 22:41:07,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-13 22:41:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions. [2022-07-13 22:41:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 22:41:07,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:07,459 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:07,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:41:07,459 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash 786653212, now seen corresponding path program 1 times [2022-07-13 22:41:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:07,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880181543] [2022-07-13 22:41:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:41:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:41:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:41:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:41:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:41:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:41:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:07,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880181543] [2022-07-13 22:41:07,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880181543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:07,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:07,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:41:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794269156] [2022-07-13 22:41:07,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:07,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:41:07,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:41:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:41:07,979 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand has 16 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-07-13 22:41:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:08,889 INFO L93 Difference]: Finished difference Result 274 states and 294 transitions. [2022-07-13 22:41:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:41:08,890 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 131 [2022-07-13 22:41:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:08,890 INFO L225 Difference]: With dead ends: 274 [2022-07-13 22:41:08,890 INFO L226 Difference]: Without dead ends: 234 [2022-07-13 22:41:08,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:41:08,891 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 276 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:08,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 322 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:41:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-13 22:41:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-07-13 22:41:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 180 states have (on average 1.0611111111111111) internal successors, (191), 181 states have internal predecessors, (191), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 22:41:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 249 transitions. [2022-07-13 22:41:08,913 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 249 transitions. Word has length 131 [2022-07-13 22:41:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:08,913 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 249 transitions. [2022-07-13 22:41:08,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-07-13 22:41:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 249 transitions. [2022-07-13 22:41:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 22:41:08,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:08,915 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 22:41:08,915 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash -575764923, now seen corresponding path program 1 times [2022-07-13 22:41:08,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:08,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963323503] [2022-07-13 22:41:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:08,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:41:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:41:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:41:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:41:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 22:41:09,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:09,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963323503] [2022-07-13 22:41:09,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963323503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:09,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816895530] [2022-07-13 22:41:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:09,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:09,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:09,230 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) [2022-07-13 22:41:09,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:41:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:09,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 22:41:09,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:09,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:41:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 22:41:09,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:41:09,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816895530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:09,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:41:09,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 20 [2022-07-13 22:41:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588216425] [2022-07-13 22:41:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:41:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:41:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:41:09,916 INFO L87 Difference]: Start difference. First operand 233 states and 249 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-13 22:41:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:10,035 INFO L93 Difference]: Finished difference Result 333 states and 356 transitions. [2022-07-13 22:41:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:41:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 131 [2022-07-13 22:41:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:10,036 INFO L225 Difference]: With dead ends: 333 [2022-07-13 22:41:10,037 INFO L226 Difference]: Without dead ends: 268 [2022-07-13 22:41:10,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-07-13 22:41:10,037 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 26 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:10,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 976 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2022-07-13 22:41:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-07-13 22:41:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 259. [2022-07-13 22:41:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 205 states have (on average 1.0829268292682928) internal successors, (222), 206 states have internal predecessors, (222), 28 states have call successors, (28), 25 states have call predecessors, (28), 25 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 22:41:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 280 transitions. [2022-07-13 22:41:10,084 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 280 transitions. Word has length 131 [2022-07-13 22:41:10,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:10,084 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 280 transitions. [2022-07-13 22:41:10,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-13 22:41:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 280 transitions. [2022-07-13 22:41:10,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 22:41:10,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:10,085 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:10,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:10,319 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,SelfDestructingSolverStorable35 [2022-07-13 22:41:10,319 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:10,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1543115577, now seen corresponding path program 2 times [2022-07-13 22:41:10,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:10,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443733685] [2022-07-13 22:41:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 22:41:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:41:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:41:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:41:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-13 22:41:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443733685] [2022-07-13 22:41:10,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443733685] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:10,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052341781] [2022-07-13 22:41:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:41:10,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:10,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:10,453 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) [2022-07-13 22:41:10,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:41:10,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:41:10,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:41:10,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:41:10,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:41:10,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:41:10,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052341781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:10,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:41:10,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:41:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633722325] [2022-07-13 22:41:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:10,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:41:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:41:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:41:10,900 INFO L87 Difference]: Start difference. First operand 259 states and 280 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:41:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:10,931 INFO L93 Difference]: Finished difference Result 431 states and 460 transitions. [2022-07-13 22:41:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:41:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-07-13 22:41:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:10,933 INFO L225 Difference]: With dead ends: 431 [2022-07-13 22:41:10,933 INFO L226 Difference]: Without dead ends: 283 [2022-07-13 22:41:10,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:41:10,933 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 22 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:10,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 321 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:41:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-13 22:41:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 259. [2022-07-13 22:41:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 205 states have (on average 1.0682926829268293) internal successors, (219), 206 states have internal predecessors, (219), 28 states have call successors, (28), 25 states have call predecessors, (28), 25 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 22:41:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 277 transitions. [2022-07-13 22:41:10,956 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 277 transitions. Word has length 131 [2022-07-13 22:41:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:10,956 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 277 transitions. [2022-07-13 22:41:10,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:41:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 277 transitions. [2022-07-13 22:41:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 22:41:10,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:10,958 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:10,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:11,178 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,SelfDestructingSolverStorable36 [2022-07-13 22:41:11,178 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:11,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1282950411, now seen corresponding path program 1 times [2022-07-13 22:41:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887015955] [2022-07-13 22:41:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:41:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:41:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:41:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:41:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:41:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:41:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-13 22:41:11,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887015955] [2022-07-13 22:41:11,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887015955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588759645] [2022-07-13 22:41:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:11,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:11,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:11,378 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) [2022-07-13 22:41:11,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:41:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:11,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-13 22:41:11,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:11,869 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 [2022-07-13 22:41:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 53 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 22:41:12,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:41:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 22:41:12,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588759645] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:41:12,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:41:12,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 32 [2022-07-13 22:41:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560153511] [2022-07-13 22:41:12,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:41:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 22:41:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 22:41:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-07-13 22:41:12,635 INFO L87 Difference]: Start difference. First operand 259 states and 277 transitions. Second operand has 32 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 10 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (30), 6 states have call predecessors, (30), 10 states have call successors, (30) [2022-07-13 22:41:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:14,470 INFO L93 Difference]: Finished difference Result 457 states and 493 transitions. [2022-07-13 22:41:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-13 22:41:14,470 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 10 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (30), 6 states have call predecessors, (30), 10 states have call successors, (30) Word has length 135 [2022-07-13 22:41:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:14,471 INFO L225 Difference]: With dead ends: 457 [2022-07-13 22:41:14,471 INFO L226 Difference]: Without dead ends: 201 [2022-07-13 22:41:14,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 280 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=459, Invalid=4233, Unknown=0, NotChecked=0, Total=4692 [2022-07-13 22:41:14,473 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 256 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:14,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1381 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2041 Invalid, 0 Unknown, 209 Unchecked, 1.0s Time] [2022-07-13 22:41:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-13 22:41:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2022-07-13 22:41:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.062015503875969) internal successors, (137), 130 states have internal predecessors, (137), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2022-07-13 22:41:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2022-07-13 22:41:14,489 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 135 [2022-07-13 22:41:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:14,489 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2022-07-13 22:41:14,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 10 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (30), 6 states have call predecessors, (30), 10 states have call successors, (30) [2022-07-13 22:41:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2022-07-13 22:41:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 22:41:14,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:14,490 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:14,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:14,699 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:14,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1622220607, now seen corresponding path program 1 times [2022-07-13 22:41:14,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:14,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905879057] [2022-07-13 22:41:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:41:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:41:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:41:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:41:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:41:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 22:41:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:15,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905879057] [2022-07-13 22:41:15,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905879057] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:15,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950908811] [2022-07-13 22:41:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:15,956 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) [2022-07-13 22:41:15,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:41:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:16,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-13 22:41:16,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:16,393 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 [2022-07-13 22:41:16,594 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:41:16,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-13 22:41:16,602 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 [2022-07-13 22:41:17,023 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:41:17,024 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 15 treesize of output 15 [2022-07-13 22:41:17,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-13 22:41:19,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-13 22:41:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:41:36,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:41:36,731 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2137 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2137) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.offset| 16)) 18446744073709551616))) is different from false [2022-07-13 22:41:36,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950908811] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:36,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:41:36,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19] total 44 [2022-07-13 22:41:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049441982] [2022-07-13 22:41:36,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:41:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-13 22:41:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-13 22:41:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2002, Unknown=2, NotChecked=90, Total=2256 [2022-07-13 22:41:36,736 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 44 states, 40 states have (on average 3.95) internal successors, (158), 40 states have internal predecessors, (158), 20 states have call successors, (32), 7 states have call predecessors, (32), 12 states have return successors, (31), 16 states have call predecessors, (31), 19 states have call successors, (31) [2022-07-13 22:41:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:40,619 INFO L93 Difference]: Finished difference Result 248 states and 261 transitions. [2022-07-13 22:41:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:41:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 3.95) internal successors, (158), 40 states have internal predecessors, (158), 20 states have call successors, (32), 7 states have call predecessors, (32), 12 states have return successors, (31), 16 states have call predecessors, (31), 19 states have call successors, (31) Word has length 137 [2022-07-13 22:41:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:40,620 INFO L225 Difference]: With dead ends: 248 [2022-07-13 22:41:40,620 INFO L226 Difference]: Without dead ends: 231 [2022-07-13 22:41:40,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 215 SyntacticMatches, 21 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=484, Invalid=6159, Unknown=3, NotChecked=160, Total=6806 [2022-07-13 22:41:40,622 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 178 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 725 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:40,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1319 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1432 Invalid, 0 Unknown, 725 Unchecked, 0.7s Time] [2022-07-13 22:41:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-13 22:41:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-07-13 22:41:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 172 states have (on average 1.0465116279069768) internal successors, (180), 174 states have internal predecessors, (180), 28 states have call successors, (28), 25 states have call predecessors, (28), 25 states have return successors, (31), 26 states have call predecessors, (31), 27 states have call successors, (31) [2022-07-13 22:41:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 239 transitions. [2022-07-13 22:41:40,666 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 239 transitions. Word has length 137 [2022-07-13 22:41:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:40,667 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 239 transitions. [2022-07-13 22:41:40,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 3.95) internal successors, (158), 40 states have internal predecessors, (158), 20 states have call successors, (32), 7 states have call predecessors, (32), 12 states have return successors, (31), 16 states have call predecessors, (31), 19 states have call successors, (31) [2022-07-13 22:41:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 239 transitions. [2022-07-13 22:41:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 22:41:40,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:40,668 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:40,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:40,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-13 22:41:40,883 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash -224292733, now seen corresponding path program 1 times [2022-07-13 22:41:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:40,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269590761] [2022-07-13 22:41:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:41:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:41:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:41:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:41:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:41:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:41:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:41:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:41:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:41:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:41:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:41:42,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:42,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269590761] [2022-07-13 22:41:42,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269590761] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:42,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499976894] [2022-07-13 22:41:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:42,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:42,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:42,686 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) [2022-07-13 22:41:42,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:41:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:43,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-13 22:41:43,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:43,121 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 [2022-07-13 22:41:43,298 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 [2022-07-13 22:41:43,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:41:43,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-13 22:41:43,425 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 [2022-07-13 22:41:44,109 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-13 22:41:44,109 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 20 treesize of output 22 [2022-07-13 22:41:44,171 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 24 [2022-07-13 22:41:46,361 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 24 [2022-07-13 22:42:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 22:42:06,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:07,056 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2245 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2245) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|))) (<= (mod (select .cse0 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.offset|) 18446744073709551616) (mod (select .cse0 (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.offset| 16)) 18446744073709551616)))) is different from false [2022-07-13 22:42:07,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499976894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:07,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:42:07,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23] total 49 [2022-07-13 22:42:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531964803] [2022-07-13 22:42:07,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:07,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-13 22:42:07,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-13 22:42:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2325, Unknown=3, NotChecked=98, Total=2652 [2022-07-13 22:42:07,062 INFO L87 Difference]: Start difference. First operand 226 states and 239 transitions. Second operand has 49 states, 45 states have (on average 3.4) internal successors, (153), 42 states have internal predecessors, (153), 20 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (30), 16 states have call predecessors, (30), 19 states have call successors, (30) [2022-07-13 22:42:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:12,969 INFO L93 Difference]: Finished difference Result 257 states and 268 transitions. [2022-07-13 22:42:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-13 22:42:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 3.4) internal successors, (153), 42 states have internal predecessors, (153), 20 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (30), 16 states have call predecessors, (30), 19 states have call successors, (30) Word has length 137 [2022-07-13 22:42:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:12,971 INFO L225 Difference]: With dead ends: 257 [2022-07-13 22:42:12,971 INFO L226 Difference]: Without dead ends: 232 [2022-07-13 22:42:12,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 217 SyntacticMatches, 22 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2783 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=745, Invalid=7087, Unknown=4, NotChecked=174, Total=8010 [2022-07-13 22:42:12,973 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 185 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1041 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:12,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1022 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 998 Invalid, 0 Unknown, 1041 Unchecked, 0.7s Time] [2022-07-13 22:42:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-13 22:42:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2022-07-13 22:42:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 168 states have (on average 1.0297619047619047) internal successors, (173), 169 states have internal predecessors, (173), 28 states have call successors, (28), 25 states have call predecessors, (28), 24 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2022-07-13 22:42:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2022-07-13 22:42:13,002 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 137 [2022-07-13 22:42:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:13,002 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2022-07-13 22:42:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 3.4) internal successors, (153), 42 states have internal predecessors, (153), 20 states have call successors, (31), 8 states have call predecessors, (31), 10 states have return successors, (30), 16 states have call predecessors, (30), 19 states have call successors, (30) [2022-07-13 22:42:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2022-07-13 22:42:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 22:42:13,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:13,003 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:13,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:13,215 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,SelfDestructingSolverStorable39 [2022-07-13 22:42:13,215 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1876810326, now seen corresponding path program 1 times [2022-07-13 22:42:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:13,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090008913] [2022-07-13 22:42:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:42:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:42:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:42:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:42:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:42:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:42:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:42:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:42:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:42:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:42:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:42:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:42:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090008913] [2022-07-13 22:42:13,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090008913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:13,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:42:13,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-13 22:42:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130930558] [2022-07-13 22:42:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 22:42:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 22:42:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:42:13,771 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 16 states have internal predecessors, (80), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-13 22:42:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:14,657 INFO L93 Difference]: Finished difference Result 228 states and 236 transitions. [2022-07-13 22:42:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 22:42:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 16 states have internal predecessors, (80), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) Word has length 139 [2022-07-13 22:42:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:14,658 INFO L225 Difference]: With dead ends: 228 [2022-07-13 22:42:14,658 INFO L226 Difference]: Without dead ends: 170 [2022-07-13 22:42:14,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 22:42:14,659 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 147 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:14,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 458 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:42:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-13 22:42:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 162. [2022-07-13 22:42:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-13 22:42:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2022-07-13 22:42:14,675 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 139 [2022-07-13 22:42:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:14,676 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2022-07-13 22:42:14,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 16 states have internal predecessors, (80), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-13 22:42:14,676 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2022-07-13 22:42:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 22:42:14,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:14,677 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:14,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 22:42:14,677 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 612030248, now seen corresponding path program 1 times [2022-07-13 22:42:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:14,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401304586] [2022-07-13 22:42:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:14,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:42:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:42:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:42:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:42:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:42:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:42:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:42:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:42:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:42:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:42:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:42:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:42:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:42:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:42:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:42:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 22:42:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:14,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401304586] [2022-07-13 22:42:14,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401304586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:14,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672593284] [2022-07-13 22:42:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:14,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:14,980 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) [2022-07-13 22:42:14,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:42:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:15,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 92 conjunts are in the unsatisfiable core [2022-07-13 22:42:15,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:15,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:42:15,621 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-13 22:42:15,622 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 [2022-07-13 22:42:15,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:42:15,711 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 39 treesize of output 34 [2022-07-13 22:42:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 43 proven. 33 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 22:42:17,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-13 22:42:17,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672593284] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:42:17,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:42:17,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24, 13] total 40 [2022-07-13 22:42:17,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665098960] [2022-07-13 22:42:17,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:17,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 22:42:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 22:42:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 22:42:17,552 INFO L87 Difference]: Start difference. First operand 162 states and 166 transitions. Second operand has 40 states, 40 states have (on average 4.45) internal successors, (178), 38 states have internal predecessors, (178), 14 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-13 22:42:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:19,816 INFO L93 Difference]: Finished difference Result 265 states and 271 transitions. [2022-07-13 22:42:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-13 22:42:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.45) internal successors, (178), 38 states have internal predecessors, (178), 14 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) Word has length 150 [2022-07-13 22:42:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:19,817 INFO L225 Difference]: With dead ends: 265 [2022-07-13 22:42:19,817 INFO L226 Difference]: Without dead ends: 158 [2022-07-13 22:42:19,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 289 SyntacticMatches, 18 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=466, Invalid=3566, Unknown=0, NotChecked=0, Total=4032 [2022-07-13 22:42:19,818 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 249 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 539 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:19,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 896 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2402 Invalid, 0 Unknown, 539 Unchecked, 1.4s Time] [2022-07-13 22:42:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-13 22:42:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-07-13 22:42:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 121 states have internal predecessors, (122), 19 states have call successors, (19), 18 states have call predecessors, (19), 17 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-13 22:42:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 159 transitions. [2022-07-13 22:42:19,834 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 159 transitions. Word has length 150 [2022-07-13 22:42:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:19,834 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 159 transitions. [2022-07-13 22:42:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.45) internal successors, (178), 38 states have internal predecessors, (178), 14 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-13 22:42:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 159 transitions. [2022-07-13 22:42:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:42:19,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:19,835 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:19,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:20,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:20,053 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash -152674917, now seen corresponding path program 1 times [2022-07-13 22:42:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:20,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432041727] [2022-07-13 22:42:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:42:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:42:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:42:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:42:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:42:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:42:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:42:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:42:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:42:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:42:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:42:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:42:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:42:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:42:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:42:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:42:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-13 22:42:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432041727] [2022-07-13 22:42:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432041727] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608982917] [2022-07-13 22:42:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:20,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:20,767 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) [2022-07-13 22:42:20,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 22:42:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:21,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-13 22:42:21,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:21,285 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 [2022-07-13 22:42:21,469 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 31 treesize of output 26 [2022-07-13 22:42:21,553 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 31 treesize of output 26 [2022-07-13 22:42:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 44 proven. 28 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 22:42:22,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:23,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608982917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:23,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:42:23,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2022-07-13 22:42:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425633665] [2022-07-13 22:42:23,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 22:42:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 22:42:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=716, Unknown=1, NotChecked=0, Total=812 [2022-07-13 22:42:23,962 INFO L87 Difference]: Start difference. First operand 158 states and 159 transitions. Second operand has 24 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-13 22:42:24,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:24,783 INFO L93 Difference]: Finished difference Result 158 states and 159 transitions. [2022-07-13 22:42:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 22:42:24,783 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 8 states have call successors, (32) Word has length 156 [2022-07-13 22:42:24,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:24,784 INFO L225 Difference]: With dead ends: 158 [2022-07-13 22:42:24,784 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 22:42:24,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 22 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=236, Invalid=1569, Unknown=1, NotChecked=0, Total=1806 [2022-07-13 22:42:24,785 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 114 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:24,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 671 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 545 Invalid, 0 Unknown, 388 Unchecked, 0.3s Time] [2022-07-13 22:42:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 22:42:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 22:42:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:42:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 22:42:24,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 156 [2022-07-13 22:42:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 22:42:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-13 22:42:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 22:42:24,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 22:42:24,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 22:42:24,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-13 22:42:25,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:25,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.