./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_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 f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:04:00,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:04:00,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:04:00,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:04:00,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:04:00,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:04:00,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:04:00,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:04:00,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:04:00,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:04:00,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:04:00,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:04:00,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:04:00,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:04:00,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:04:00,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:04:00,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:04:00,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:04:00,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:04:00,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:04:00,910 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:04:00,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:04:00,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:04:00,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:04:00,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:04:00,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:04:00,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:04:00,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:04:00,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:04:00,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:04:00,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:04:00,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:04:00,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:04:00,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:04:00,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:04:00,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:04:00,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:04:00,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:04:00,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:04:00,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:04:00,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:04:00,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:04:00,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:04:00,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:04:00,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:04:00,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:04:00,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:04:00,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:04:00,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:04:00,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:04:00,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:04:00,938 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:04:00,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:04:00,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:04:00,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:04:00,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:04:00,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:04:00,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:04:00,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:04:00,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:04:00,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:04:00,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:04:00,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:04:00,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:04:00,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:04:00,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:04:00,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:04:00,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:04:00,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:04:00,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:04:00,942 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:04:00,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:04:00,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:04:00,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb [2022-07-12 11:04:01,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:04:01,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:04:01,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:04:01,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:04:01,121 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:04:01,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-07-12 11:04:01,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f87f437/cb417c354be9464982cace743360f9fe/FLAG002b6f896 [2022-07-12 11:04:01,797 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:04:01,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-07-12 11:04:01,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f87f437/cb417c354be9464982cace743360f9fe/FLAG002b6f896 [2022-07-12 11:04:01,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f87f437/cb417c354be9464982cace743360f9fe [2022-07-12 11:04:01,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:04:01,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:04:01,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:04:01,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:04:01,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:04:01,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:04:01" (1/1) ... [2022-07-12 11:04:01,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733c898f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:01, skipping insertion in model container [2022-07-12 11:04:01,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:04:01" (1/1) ... [2022-07-12 11:04:01,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:04:02,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:04:02,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4497,4510] [2022-07-12 11:04:02,276 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4557,4570] [2022-07-12 11:04:02,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,752 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,752 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,767 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,768 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,776 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,777 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:02,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,068 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:04:03,069 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:04:03,070 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:04:03,070 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:04:03,071 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:04:03,071 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:04:03,072 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:04:03,072 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:04:03,072 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:04:03,073 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:04:03,187 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:04:03,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:04:03,387 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:04:03,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4497,4510] [2022-07-12 11:04:03,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4557,4570] [2022-07-12 11:04:03,428 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,434 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,434 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,434 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,435 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,453 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:04:03,454 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:04:03,454 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:04:03,455 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:04:03,455 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:04:03,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:04:03,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:04:03,456 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:04:03,457 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:04:03,457 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:04:03,469 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:04:03,497 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,497 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:03,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:04:03,683 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:04:03,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03 WrapperNode [2022-07-12 11:04:03,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:04:03,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:04:03,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:04:03,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:04:03,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,854 INFO L137 Inliner]: procedures = 690, calls = 2631, calls flagged for inlining = 61, calls inlined = 10, statements flattened = 959 [2022-07-12 11:04:03,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:04:03,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:04:03,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:04:03,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:04:03,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:04:03,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:04:03,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:04:03,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:04:03,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (1/1) ... [2022-07-12 11:04:03,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:04:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:03,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 11:04:03,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 11:04:04,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-07-12 11:04:04,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-07-12 11:04:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-12 11:04:04,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-12 11:04:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:04:04,017 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:04:04,018 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:04:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-12 11:04:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 11:04:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 11:04:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:04:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 11:04:04,020 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 11:04:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:04:04,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:04:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:04:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:04:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:04:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:04:04,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:04:04,021 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:04:04,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:04:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 11:04:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 11:04:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:04:04,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:04:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:04:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:04:04,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:04:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:04:04,023 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:04:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:04:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-12 11:04:04,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:04:04,297 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:04:04,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:04:05,151 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:04:05,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:04:05,160 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 11:04:05,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:04:05 BoogieIcfgContainer [2022-07-12 11:04:05,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:04:05,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:04:05,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:04:05,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:04:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:04:01" (1/3) ... [2022-07-12 11:04:05,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3200ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:04:05, skipping insertion in model container [2022-07-12 11:04:05,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:03" (2/3) ... [2022-07-12 11:04:05,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3200ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:04:05, skipping insertion in model container [2022-07-12 11:04:05,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:04:05" (3/3) ... [2022-07-12 11:04:05,171 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_u8_harness.i [2022-07-12 11:04:05,182 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:04:05,183 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:04:05,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:04:05,264 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@180e9158, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60d47551 [2022-07-12 11:04:05,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:04:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 85 states have internal predecessors, (107), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-12 11:04:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 11:04:05,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:05,285 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:05,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1911600459, now seen corresponding path program 1 times [2022-07-12 11:04:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:05,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396428798] [2022-07-12 11:04:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:04:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:04:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:04:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:04:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:04:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:04:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-12 11:04:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:06,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396428798] [2022-07-12 11:04:06,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396428798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:06,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:06,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:04:06,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863890001] [2022-07-12 11:04:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:06,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:04:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:04:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:04:06,077 INFO L87 Difference]: Start difference. First operand has 132 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 85 states have internal predecessors, (107), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 11:04:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:06,275 INFO L93 Difference]: Finished difference Result 261 states and 387 transitions. [2022-07-12 11:04:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:04:06,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2022-07-12 11:04:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:06,284 INFO L225 Difference]: With dead ends: 261 [2022-07-12 11:04:06,285 INFO L226 Difference]: Without dead ends: 126 [2022-07-12 11:04:06,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:04:06,307 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:06,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 233 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:04:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-12 11:04:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-12 11:04:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 79 states have (on average 1.240506329113924) internal successors, (98), 80 states have internal predecessors, (98), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 11:04:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 173 transitions. [2022-07-12 11:04:06,388 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 173 transitions. Word has length 107 [2022-07-12 11:04:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:06,388 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 173 transitions. [2022-07-12 11:04:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 11:04:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 173 transitions. [2022-07-12 11:04:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 11:04:06,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:06,392 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:04:06,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 856378377, now seen corresponding path program 1 times [2022-07-12 11:04:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:06,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210486470] [2022-07-12 11:04:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:04:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:04:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:04:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:04:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:04:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:04:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-12 11:04:06,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:06,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210486470] [2022-07-12 11:04:06,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210486470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:06,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804619293] [2022-07-12 11:04:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:06,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:06,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:06,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:06,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:04:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:04:07,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-12 11:04:07,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:07,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804619293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:07,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:07,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 11:04:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153730142] [2022-07-12 11:04:07,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:07,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:04:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:07,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:04:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:07,405 INFO L87 Difference]: Start difference. First operand 126 states and 173 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:04:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:07,578 INFO L93 Difference]: Finished difference Result 236 states and 335 transitions. [2022-07-12 11:04:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:04:07,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2022-07-12 11:04:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:07,581 INFO L225 Difference]: With dead ends: 236 [2022-07-12 11:04:07,581 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:04:07,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:04:07,583 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 194 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:07,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 362 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:04:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:04:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (45), 37 states have call predecessors, (45), 37 states have call successors, (45) [2022-07-12 11:04:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 183 transitions. [2022-07-12 11:04:07,613 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 183 transitions. Word has length 107 [2022-07-12 11:04:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:07,613 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 183 transitions. [2022-07-12 11:04:07,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:04:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 183 transitions. [2022-07-12 11:04:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 11:04:07,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:07,616 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:07,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:07,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:07,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1509088892, now seen corresponding path program 1 times [2022-07-12 11:04:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:07,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317731939] [2022-07-12 11:04:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:04:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:04:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:04:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:04:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:04:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:04:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:04:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 11:04:08,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:08,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317731939] [2022-07-12 11:04:08,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317731939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027839680] [2022-07-12 11:04:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:08,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:08,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:08,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:04:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:04:08,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 11:04:08,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:08,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027839680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:08,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:08,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-12 11:04:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968677889] [2022-07-12 11:04:08,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:08,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:04:08,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:04:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:04:08,822 INFO L87 Difference]: Start difference. First operand 129 states and 183 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-12 11:04:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:09,036 INFO L93 Difference]: Finished difference Result 226 states and 322 transitions. [2022-07-12 11:04:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:04:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 109 [2022-07-12 11:04:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:09,038 INFO L225 Difference]: With dead ends: 226 [2022-07-12 11:04:09,039 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:04:09,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:04:09,040 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 207 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:09,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 583 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:04:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:04:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:04:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-12 11:04:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 181 transitions. [2022-07-12 11:04:09,052 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 181 transitions. Word has length 109 [2022-07-12 11:04:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:09,053 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 181 transitions. [2022-07-12 11:04:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-12 11:04:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 181 transitions. [2022-07-12 11:04:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 11:04:09,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:09,055 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 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] [2022-07-12 11:04:09,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:09,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 11:04:09,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1446621481, now seen corresponding path program 2 times [2022-07-12 11:04:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:09,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327190207] [2022-07-12 11:04:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:04:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:04:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:04:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:04:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:04:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:04:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 11:04:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327190207] [2022-07-12 11:04:09,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327190207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065848746] [2022-07-12 11:04:09,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:04:09,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:09,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:09,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:04:10,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:04:10,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:10,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 11:04:10,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-12 11:04:10,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:10,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065848746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:10,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:10,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 12 [2022-07-12 11:04:10,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403193754] [2022-07-12 11:04:10,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:10,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:04:10,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:10,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:04:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:04:10,183 INFO L87 Difference]: Start difference. First operand 129 states and 181 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-12 11:04:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:10,331 INFO L93 Difference]: Finished difference Result 221 states and 311 transitions. [2022-07-12 11:04:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:04:10,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 111 [2022-07-12 11:04:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:10,335 INFO L225 Difference]: With dead ends: 221 [2022-07-12 11:04:10,336 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:04:10,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:04:10,338 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 107 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:10,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 898 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:04:10,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:04:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-12 11:04:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2022-07-12 11:04:10,371 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 111 [2022-07-12 11:04:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:10,372 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2022-07-12 11:04:10,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-12 11:04:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2022-07-12 11:04:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 11:04:10,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:10,376 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:10,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:10,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1547321138, now seen corresponding path program 3 times [2022-07-12 11:04:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:10,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453397896] [2022-07-12 11:04:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:04:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:04:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:04:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-12 11:04:10,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:10,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453397896] [2022-07-12 11:04:10,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453397896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:10,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026516157] [2022-07-12 11:04:10,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:04:10,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:10,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:10,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:10,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:04:11,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 11:04:11,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:11,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 11:04:11,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 11:04:11,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:11,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026516157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:11,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:11,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-12 11:04:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243968978] [2022-07-12 11:04:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:11,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:04:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:04:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:04:11,465 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:04:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:11,550 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2022-07-12 11:04:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:04:11,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 113 [2022-07-12 11:04:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:11,554 INFO L225 Difference]: With dead ends: 216 [2022-07-12 11:04:11,554 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:04:11,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:04:11,556 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 2 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:11,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 922 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:04:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:04:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2022-07-12 11:04:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2022-07-12 11:04:11,573 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 113 [2022-07-12 11:04:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:11,574 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2022-07-12 11:04:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:04:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2022-07-12 11:04:11,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 11:04:11,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:11,577 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:11,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:11,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:11,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash -126288589, now seen corresponding path program 4 times [2022-07-12 11:04:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:11,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162150531] [2022-07-12 11:04:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:04:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:04:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:04:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 11:04:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:12,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162150531] [2022-07-12 11:04:12,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162150531] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:12,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901949413] [2022-07-12 11:04:12,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 11:04:12,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:12,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:12,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:12,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:04:12,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 11:04:12,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:12,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 11:04:12,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-12 11:04:12,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:12,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901949413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:12,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:12,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2022-07-12 11:04:12,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611392048] [2022-07-12 11:04:12,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:04:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:04:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:04:12,805 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-12 11:04:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:13,215 INFO L93 Difference]: Finished difference Result 205 states and 277 transitions. [2022-07-12 11:04:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:04:13,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 115 [2022-07-12 11:04:13,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:13,216 INFO L225 Difference]: With dead ends: 205 [2022-07-12 11:04:13,216 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:04:13,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:04:13,217 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 263 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:13,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 779 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:04:13,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:04:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:04:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-12 11:04:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 176 transitions. [2022-07-12 11:04:13,233 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 176 transitions. Word has length 115 [2022-07-12 11:04:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:13,233 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 176 transitions. [2022-07-12 11:04:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-12 11:04:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 176 transitions. [2022-07-12 11:04:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 11:04:13,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:13,235 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:13,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 11:04:13,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:13,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1860935384, now seen corresponding path program 1 times [2022-07-12 11:04:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:13,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170388175] [2022-07-12 11:04:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:04:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:04:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:04:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-12 11:04:13,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:13,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170388175] [2022-07-12 11:04:13,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170388175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:13,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:13,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:04:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197758349] [2022-07-12 11:04:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:04:13,681 INFO L87 Difference]: Start difference. First operand 129 states and 176 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 11:04:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:14,194 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2022-07-12 11:04:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:04:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2022-07-12 11:04:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:14,197 INFO L225 Difference]: With dead ends: 141 [2022-07-12 11:04:14,197 INFO L226 Difference]: Without dead ends: 139 [2022-07-12 11:04:14,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:04:14,198 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 57 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:14,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 815 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:04:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-12 11:04:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2022-07-12 11:04:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 90 states have internal predecessors, (106), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-12 11:04:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 194 transitions. [2022-07-12 11:04:14,208 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 194 transitions. Word has length 117 [2022-07-12 11:04:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:14,208 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 194 transitions. [2022-07-12 11:04:14,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-12 11:04:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 194 transitions. [2022-07-12 11:04:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 11:04:14,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:14,210 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:14,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:04:14,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1848112160, now seen corresponding path program 1 times [2022-07-12 11:04:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:14,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958760158] [2022-07-12 11:04:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:14,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:04:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:04:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:04:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 11:04:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:14,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958760158] [2022-07-12 11:04:14,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958760158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:14,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856118203] [2022-07-12 11:04:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:14,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:14,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:14,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:04:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:14,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 11:04:14,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:14,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:04:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-12 11:04:15,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:15,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856118203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:15,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:15,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 18 [2022-07-12 11:04:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932051783] [2022-07-12 11:04:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:15,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:04:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:15,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:04:15,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:04:15,230 INFO L87 Difference]: Start difference. First operand 138 states and 194 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-12 11:04:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:15,629 INFO L93 Difference]: Finished difference Result 261 states and 367 transitions. [2022-07-12 11:04:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 11:04:15,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 121 [2022-07-12 11:04:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:15,631 INFO L225 Difference]: With dead ends: 261 [2022-07-12 11:04:15,631 INFO L226 Difference]: Without dead ends: 138 [2022-07-12 11:04:15,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2022-07-12 11:04:15,632 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 62 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:15,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 879 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 59 Unchecked, 0.3s Time] [2022-07-12 11:04:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-12 11:04:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-07-12 11:04:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 90 states have internal predecessors, (106), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (48), 38 states have call predecessors, (48), 38 states have call successors, (48) [2022-07-12 11:04:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2022-07-12 11:04:15,660 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 121 [2022-07-12 11:04:15,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:15,660 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2022-07-12 11:04:15,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-12 11:04:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2022-07-12 11:04:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 11:04:15,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:15,662 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2022-07-12 11:04:15,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:15,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:15,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1143204392, now seen corresponding path program 2 times [2022-07-12 11:04:15,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:15,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937686318] [2022-07-12 11:04:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:04:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:04:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:04:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:04:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:04:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:04:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:04:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:04:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:04:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:04:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-12 11:04:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937686318] [2022-07-12 11:04:16,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937686318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228194165] [2022-07-12 11:04:16,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:04:16,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:16,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:16,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:04:17,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:04:17,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:17,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:04:17,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 11:04:17,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:17,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228194165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:17,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:17,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 11:04:17,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127239173] [2022-07-12 11:04:17,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:17,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:04:17,069 INFO L87 Difference]: Start difference. First operand 138 states and 193 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, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:04:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:17,198 INFO L93 Difference]: Finished difference Result 262 states and 377 transitions. [2022-07-12 11:04:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:04:17,199 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, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2022-07-12 11:04:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:17,200 INFO L225 Difference]: With dead ends: 262 [2022-07-12 11:04:17,200 INFO L226 Difference]: Without dead ends: 143 [2022-07-12 11:04:17,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:04:17,203 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:17,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1273 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-07-12 11:04:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-07-12 11:04:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 95 states have internal predecessors, (110), 39 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (57), 38 states have call predecessors, (57), 38 states have call successors, (57) [2022-07-12 11:04:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 206 transitions. [2022-07-12 11:04:17,216 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 206 transitions. Word has length 125 [2022-07-12 11:04:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:17,217 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 206 transitions. [2022-07-12 11:04:17,217 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, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:04:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 206 transitions. [2022-07-12 11:04:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 11:04:17,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:17,218 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 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] [2022-07-12 11:04:17,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:17,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:17,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -898461391, now seen corresponding path program 1 times [2022-07-12 11:04:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:17,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772609127] [2022-07-12 11:04:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:04:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:04:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:04:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:04:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:04:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:04:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-12 11:04:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:17,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772609127] [2022-07-12 11:04:17,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772609127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:17,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741109304] [2022-07-12 11:04:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:17,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:17,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:17,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:17,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:04:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:18,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-12 11:04:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 17 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:04:19,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:19,415 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 [2022-07-12 11:04:19,507 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:04:19,507 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 [2022-07-12 11:04:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 11:04:19,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741109304] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:04:19,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:04:19,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 28 [2022-07-12 11:04:19,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328339415] [2022-07-12 11:04:19,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:04:19,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 11:04:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 11:04:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:04:19,522 INFO L87 Difference]: Start difference. First operand 143 states and 206 transitions. Second operand has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2022-07-12 11:04:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:21,836 INFO L93 Difference]: Finished difference Result 359 states and 557 transitions. [2022-07-12 11:04:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 11:04:21,837 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) Word has length 127 [2022-07-12 11:04:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:21,839 INFO L225 Difference]: With dead ends: 359 [2022-07-12 11:04:21,839 INFO L226 Difference]: Without dead ends: 232 [2022-07-12 11:04:21,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 248 SyntacticMatches, 23 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=269, Invalid=1987, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 11:04:21,840 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 178 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:21,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1474 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1655 Invalid, 0 Unknown, 273 Unchecked, 1.8s Time] [2022-07-12 11:04:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-12 11:04:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 177. [2022-07-12 11:04:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 115 states have internal predecessors, (130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (74), 48 states have call predecessors, (74), 51 states have call successors, (74) [2022-07-12 11:04:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2022-07-12 11:04:21,867 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 127 [2022-07-12 11:04:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:21,868 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2022-07-12 11:04:21,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2022-07-12 11:04:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2022-07-12 11:04:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 11:04:21,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:21,869 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 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] [2022-07-12 11:04:21,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:22,089 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,SelfDestructingSolverStorable9 [2022-07-12 11:04:22,089 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash 66408255, now seen corresponding path program 1 times [2022-07-12 11:04:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:22,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705922877] [2022-07-12 11:04:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:04:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:04:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:04:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:04:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:04:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:04:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:04:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:04:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:04:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:04:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:04:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-12 11:04:22,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:22,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705922877] [2022-07-12 11:04:22,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705922877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:22,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:22,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:04:22,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786244415] [2022-07-12 11:04:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:22,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:04:22,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:22,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:04:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:04:22,311 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-12 11:04:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:22,882 INFO L93 Difference]: Finished difference Result 331 states and 489 transitions. [2022-07-12 11:04:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:04:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 134 [2022-07-12 11:04:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:22,884 INFO L225 Difference]: With dead ends: 331 [2022-07-12 11:04:22,884 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 11:04:22,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:04:22,885 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 149 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:22,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 593 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:04:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 11:04:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 177. [2022-07-12 11:04:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.162162162162162) internal successors, (129), 115 states have internal predecessors, (129), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (74), 48 states have call predecessors, (74), 51 states have call successors, (74) [2022-07-12 11:04:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 255 transitions. [2022-07-12 11:04:22,897 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 255 transitions. Word has length 134 [2022-07-12 11:04:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:22,897 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 255 transitions. [2022-07-12 11:04:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-12 11:04:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 255 transitions. [2022-07-12 11:04:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 11:04:22,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:22,899 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 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] [2022-07-12 11:04:22,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 11:04:22,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2019042026, now seen corresponding path program 1 times [2022-07-12 11:04:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:22,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967976007] [2022-07-12 11:04:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:04:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:04:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:04:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:04:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:04:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:04:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:04:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:04:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:04:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:04:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-12 11:04:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967976007] [2022-07-12 11:04:23,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967976007] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093013296] [2022-07-12 11:04:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:23,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:23,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:23,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:04:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:23,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-12 11:04:23,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:23,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:04:23,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:04:24,019 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:04:24,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:04:24,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:04:24,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:04:24,259 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 [2022-07-12 11:04:24,948 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:04:24,948 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 [2022-07-12 11:04:24,987 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 17 treesize of output 19 [2022-07-12 11:04:29,104 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 17 treesize of output 19 [2022-07-12 11:04:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 148 proven. 87 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 11:04:54,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:54,458 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_821 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_821) |c_ULTIMATE.start_aws_byte_cursor_read_u8_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_u8_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-12 11:04:54,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093013296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:54,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:04:54,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 44 [2022-07-12 11:04:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289524843] [2022-07-12 11:04:54,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:04:54,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 11:04:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:54,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 11:04:54,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2272, Unknown=3, NotChecked=96, Total=2550 [2022-07-12 11:04:54,466 INFO L87 Difference]: Start difference. First operand 177 states and 255 transitions. Second operand has 44 states, 41 states have (on average 3.1707317073170733) internal successors, (130), 40 states have internal predecessors, (130), 18 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (35), 16 states have call predecessors, (35), 18 states have call successors, (35) [2022-07-12 11:05:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:00,205 INFO L93 Difference]: Finished difference Result 377 states and 556 transitions. [2022-07-12 11:05:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 11:05:00,206 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 3.1707317073170733) internal successors, (130), 40 states have internal predecessors, (130), 18 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (35), 16 states have call predecessors, (35), 18 states have call successors, (35) Word has length 145 [2022-07-12 11:05:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:00,207 INFO L225 Difference]: With dead ends: 377 [2022-07-12 11:05:00,207 INFO L226 Difference]: Without dead ends: 255 [2022-07-12 11:05:00,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 218 SyntacticMatches, 22 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=441, Invalid=5721, Unknown=4, NotChecked=154, Total=6320 [2022-07-12 11:05:00,210 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 205 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1648 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:00,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 2314 Invalid, 4703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2899 Invalid, 0 Unknown, 1648 Unchecked, 2.8s Time] [2022-07-12 11:05:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-12 11:05:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-07-12 11:05:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (72), 48 states have call predecessors, (72), 51 states have call successors, (72) [2022-07-12 11:05:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 280 transitions. [2022-07-12 11:05:00,225 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 280 transitions. Word has length 145 [2022-07-12 11:05:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:00,225 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 280 transitions. [2022-07-12 11:05:00,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 3.1707317073170733) internal successors, (130), 40 states have internal predecessors, (130), 18 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (35), 16 states have call predecessors, (35), 18 states have call successors, (35) [2022-07-12 11:05:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 280 transitions. [2022-07-12 11:05:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 11:05:00,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:00,227 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:00,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 11:05:00,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:00,443 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1111968247, now seen corresponding path program 1 times [2022-07-12 11:05:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:00,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609926314] [2022-07-12 11:05:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:05:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:05:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:05:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:05:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 11:05:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-07-12 11:05:00,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:00,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609926314] [2022-07-12 11:05:00,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609926314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:00,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732521683] [2022-07-12 11:05:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:00,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:00,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:00,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:00,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:05:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:05:01,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-12 11:05:01,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:01,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732521683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:01,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:01,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 11:05:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907316727] [2022-07-12 11:05:01,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:05:01,269 INFO L87 Difference]: Start difference. First operand 205 states and 280 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-12 11:05:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:01,388 INFO L93 Difference]: Finished difference Result 329 states and 452 transitions. [2022-07-12 11:05:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:05:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2022-07-12 11:05:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:01,390 INFO L225 Difference]: With dead ends: 329 [2022-07-12 11:05:01,390 INFO L226 Difference]: Without dead ends: 205 [2022-07-12 11:05:01,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:01,391 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:01,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1261 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:05:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-12 11:05:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-12 11:05:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (70), 48 states have call predecessors, (70), 51 states have call successors, (70) [2022-07-12 11:05:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 278 transitions. [2022-07-12 11:05:01,404 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 278 transitions. Word has length 159 [2022-07-12 11:05:01,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:01,404 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 278 transitions. [2022-07-12 11:05:01,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-12 11:05:01,404 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 278 transitions. [2022-07-12 11:05:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 11:05:01,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:01,405 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-12 11:05:01,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:01,627 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,SelfDestructingSolverStorable12 [2022-07-12 11:05:01,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash 501632720, now seen corresponding path program 1 times [2022-07-12 11:05:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:01,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920576103] [2022-07-12 11:05:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:01,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:05:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:05:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:05:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:05:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:05:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:05:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:05:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:05:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-12 11:05:02,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:02,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920576103] [2022-07-12 11:05:02,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920576103] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:02,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838621071] [2022-07-12 11:05:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:02,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:02,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:02,015 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:02,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:05:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:02,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:05:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-12 11:05:02,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838621071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:02,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:02,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 11:05:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728322450] [2022-07-12 11:05:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:02,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:05:02,497 INFO L87 Difference]: Start difference. First operand 205 states and 278 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:05:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:02,649 INFO L93 Difference]: Finished difference Result 327 states and 445 transitions. [2022-07-12 11:05:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:05:02,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2022-07-12 11:05:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:02,651 INFO L225 Difference]: With dead ends: 327 [2022-07-12 11:05:02,651 INFO L226 Difference]: Without dead ends: 205 [2022-07-12 11:05:02,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:02,652 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:02,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1261 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:05:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-12 11:05:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-12 11:05:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (67), 48 states have call predecessors, (67), 51 states have call successors, (67) [2022-07-12 11:05:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 275 transitions. [2022-07-12 11:05:02,665 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 275 transitions. Word has length 141 [2022-07-12 11:05:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:02,665 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 275 transitions. [2022-07-12 11:05:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-12 11:05:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 275 transitions. [2022-07-12 11:05:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 11:05:02,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:02,667 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-12 11:05:02,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 11:05:02,883 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,SelfDestructingSolverStorable13 [2022-07-12 11:05:02,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash -198769456, now seen corresponding path program 2 times [2022-07-12 11:05:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554452929] [2022-07-12 11:05:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:05:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:05:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-12 11:05:03,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:03,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554452929] [2022-07-12 11:05:03,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554452929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:03,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976668138] [2022-07-12 11:05:03,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:05:03,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:03,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:03,264 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:03,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:05:04,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:05:04,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:05:04,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:05:04,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-07-12 11:05:04,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:04,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976668138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:04,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:04,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 11:05:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262877651] [2022-07-12 11:05:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:04,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:05:04,469 INFO L87 Difference]: Start difference. First operand 205 states and 275 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-12 11:05:04,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:04,613 INFO L93 Difference]: Finished difference Result 306 states and 417 transitions. [2022-07-12 11:05:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:05:04,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2022-07-12 11:05:04,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:04,616 INFO L225 Difference]: With dead ends: 306 [2022-07-12 11:05:04,616 INFO L226 Difference]: Without dead ends: 205 [2022-07-12 11:05:04,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:04,619 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:04,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1262 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:05:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-12 11:05:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-12 11:05:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (65), 48 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-12 11:05:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 273 transitions. [2022-07-12 11:05:04,633 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 273 transitions. Word has length 161 [2022-07-12 11:05:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:04,633 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 273 transitions. [2022-07-12 11:05:04,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-12 11:05:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 273 transitions. [2022-07-12 11:05:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 11:05:04,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:04,635 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:04,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:04,855 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,SelfDestructingSolverStorable14 [2022-07-12 11:05:04,856 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1785682142, now seen corresponding path program 2 times [2022-07-12 11:05:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:04,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991199274] [2022-07-12 11:05:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:05:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:05:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:05:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:05:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:05:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:05:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:05:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:05:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:05:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-12 11:05:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:05,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991199274] [2022-07-12 11:05:05,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991199274] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:05,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498903057] [2022-07-12 11:05:05,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:05:05,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:05,287 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:05,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:05:05,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:05:05,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:05:05,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-12 11:05:05,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:05,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:05:05,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:05:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-12 11:05:06,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:06,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498903057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:06,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:06,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2022-07-12 11:05:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369640244] [2022-07-12 11:05:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:06,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:05:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:06,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:05:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-07-12 11:05:06,264 INFO L87 Difference]: Start difference. First operand 205 states and 273 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-12 11:05:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:06,341 INFO L93 Difference]: Finished difference Result 362 states and 479 transitions. [2022-07-12 11:05:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:05:06,341 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 145 [2022-07-12 11:05:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:06,342 INFO L225 Difference]: With dead ends: 362 [2022-07-12 11:05:06,342 INFO L226 Difference]: Without dead ends: 210 [2022-07-12 11:05:06,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:05:06,343 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 75 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:06,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 594 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 44 Invalid, 0 Unknown, 71 Unchecked, 0.0s Time] [2022-07-12 11:05:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-12 11:05:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-07-12 11:05:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 142 states have internal predecessors, (160), 52 states have call successors, (52), 18 states have call predecessors, (52), 17 states have return successors, (65), 48 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-12 11:05:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 277 transitions. [2022-07-12 11:05:06,371 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 277 transitions. Word has length 145 [2022-07-12 11:05:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:06,371 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 277 transitions. [2022-07-12 11:05:06,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-12 11:05:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 277 transitions. [2022-07-12 11:05:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 11:05:06,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:06,373 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:06,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:06,573 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,SelfDestructingSolverStorable15 [2022-07-12 11:05:06,573 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:06,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1788038743, now seen corresponding path program 3 times [2022-07-12 11:05:06,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:06,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566652527] [2022-07-12 11:05:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:06,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 11:05:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-12 11:05:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:06,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566652527] [2022-07-12 11:05:06,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566652527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:06,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608139246] [2022-07-12 11:05:06,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:05:06,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:06,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:06,942 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:06,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:05:07,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-12 11:05:07,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:05:07,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 11:05:07,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:07,912 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 45 treesize of output 29 [2022-07-12 11:05:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 191 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-12 11:05:07,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:08,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-07-12 11:05:08,151 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:05:08,152 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 [2022-07-12 11:05:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-12 11:05:08,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608139246] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:05:08,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:05:08,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 20 [2022-07-12 11:05:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202108440] [2022-07-12 11:05:08,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 11:05:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 11:05:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:05:08,204 INFO L87 Difference]: Start difference. First operand 209 states and 277 transitions. Second operand has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 9 states have call successors, (33), 6 states have call predecessors, (33), 4 states have return successors, (29), 7 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-12 11:05:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:10,059 INFO L93 Difference]: Finished difference Result 360 states and 500 transitions. [2022-07-12 11:05:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 11:05:10,059 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 9 states have call successors, (33), 6 states have call predecessors, (33), 4 states have return successors, (29), 7 states have call predecessors, (29), 9 states have call successors, (29) Word has length 163 [2022-07-12 11:05:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:10,061 INFO L225 Difference]: With dead ends: 360 [2022-07-12 11:05:10,061 INFO L226 Difference]: Without dead ends: 258 [2022-07-12 11:05:10,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 349 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:05:10,062 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 124 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:10,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1116 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1321 Invalid, 0 Unknown, 137 Unchecked, 1.6s Time] [2022-07-12 11:05:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-12 11:05:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 215. [2022-07-12 11:05:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 144 states have (on average 1.1388888888888888) internal successors, (164), 147 states have internal predecessors, (164), 51 states have call successors, (51), 20 states have call predecessors, (51), 19 states have return successors, (64), 47 states have call predecessors, (64), 50 states have call successors, (64) [2022-07-12 11:05:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2022-07-12 11:05:10,077 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 163 [2022-07-12 11:05:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:10,077 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2022-07-12 11:05:10,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 9 states have call successors, (33), 6 states have call predecessors, (33), 4 states have return successors, (29), 7 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-12 11:05:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2022-07-12 11:05:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 11:05:10,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:10,079 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:10,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:10,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:10,300 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -27093342, now seen corresponding path program 1 times [2022-07-12 11:05:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:10,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576699988] [2022-07-12 11:05:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:05:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:05:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:05:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:05:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:05:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:05:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:05:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:05:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:05:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-07-12 11:05:10,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:10,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576699988] [2022-07-12 11:05:10,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576699988] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:10,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358250088] [2022-07-12 11:05:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:10,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:10,458 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:10,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 11:05:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:05:10,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 11:05:10,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:10,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358250088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:10,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:10,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 11:05:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686962613] [2022-07-12 11:05:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:10,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:05:10,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:05:10,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:05:10,882 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 11:05:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:10,907 INFO L93 Difference]: Finished difference Result 391 states and 523 transitions. [2022-07-12 11:05:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:05:10,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-12 11:05:10,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:10,908 INFO L225 Difference]: With dead ends: 391 [2022-07-12 11:05:10,908 INFO L226 Difference]: Without dead ends: 199 [2022-07-12 11:05:10,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:05:10,910 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:10,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 506 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:05:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-12 11:05:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2022-07-12 11:05:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 135 states have internal predecessors, (150), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (58), 42 states have call predecessors, (58), 44 states have call successors, (58) [2022-07-12 11:05:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 253 transitions. [2022-07-12 11:05:10,921 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 253 transitions. Word has length 145 [2022-07-12 11:05:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:10,921 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 253 transitions. [2022-07-12 11:05:10,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 11:05:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 253 transitions. [2022-07-12 11:05:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 11:05:10,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:10,923 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:10,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:11,140 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,SelfDestructingSolverStorable17 [2022-07-12 11:05:11,141 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:11,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash -512783847, now seen corresponding path program 1 times [2022-07-12 11:05:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:11,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424168082] [2022-07-12 11:05:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 11:05:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 62 proven. 36 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-12 11:05:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424168082] [2022-07-12 11:05:12,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424168082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570107125] [2022-07-12 11:05:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:12,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:12,203 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:12,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 11:05:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-12 11:05:12,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:12,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:05:12,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:05:12,810 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:05:12,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:05:13,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 11:05:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:13,116 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 11:05:13,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 22 [2022-07-12 11:05:13,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:05:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:14,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:14,256 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 11:05:14,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 51 [2022-07-12 11:05:14,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2022-07-12 11:05:14,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2022-07-12 11:05:16,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:16,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:16,278 INFO L356 Elim1Store]: treesize reduction 66, result has 35.3 percent of original size [2022-07-12 11:05:16,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 53 [2022-07-12 11:05:16,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:05:16,794 INFO L356 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2022-07-12 11:05:16,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2022-07-12 11:05:16,848 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 32 treesize of output 30 [2022-07-12 11:05:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 72 proven. 165 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 11:05:29,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:29,678 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1493 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1493) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) (+ |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset| 8)) 0))) is different from false [2022-07-12 11:05:29,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570107125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:29,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:05:29,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2022-07-12 11:05:29,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361310707] [2022-07-12 11:05:29,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-12 11:05:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-12 11:05:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3548, Unknown=4, NotChecked=120, Total=3906 [2022-07-12 11:05:29,741 INFO L87 Difference]: Start difference. First operand 196 states and 253 transitions. Second operand has 56 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 48 states have internal predecessors, (127), 22 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (37), 20 states have call predecessors, (37), 21 states have call successors, (37) [2022-07-12 11:05:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:40,475 INFO L93 Difference]: Finished difference Result 377 states and 500 transitions. [2022-07-12 11:05:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-07-12 11:05:40,476 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 48 states have internal predecessors, (127), 22 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (37), 20 states have call predecessors, (37), 21 states have call successors, (37) Word has length 163 [2022-07-12 11:05:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:40,477 INFO L225 Difference]: With dead ends: 377 [2022-07-12 11:05:40,478 INFO L226 Difference]: Without dead ends: 272 [2022-07-12 11:05:40,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 176 SyntacticMatches, 27 SemanticMatches, 120 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4873 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=801, Invalid=13717, Unknown=6, NotChecked=238, Total=14762 [2022-07-12 11:05:40,481 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 133 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1441 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:40,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 3521 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2731 Invalid, 0 Unknown, 1441 Unchecked, 3.6s Time] [2022-07-12 11:05:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-12 11:05:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 259. [2022-07-12 11:05:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 174 states have (on average 1.1264367816091954) internal successors, (196), 175 states have internal predecessors, (196), 61 states have call successors, (61), 24 states have call predecessors, (61), 23 states have return successors, (81), 59 states have call predecessors, (81), 60 states have call successors, (81) [2022-07-12 11:05:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2022-07-12 11:05:40,499 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 163 [2022-07-12 11:05:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:40,499 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2022-07-12 11:05:40,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 48 states have internal predecessors, (127), 22 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (37), 20 states have call predecessors, (37), 21 states have call successors, (37) [2022-07-12 11:05:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2022-07-12 11:05:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 11:05:40,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:40,500 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:40,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:40,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:40,721 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash 939790165, now seen corresponding path program 1 times [2022-07-12 11:05:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:40,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252033222] [2022-07-12 11:05:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-12 11:05:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252033222] [2022-07-12 11:05:41,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252033222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:41,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:41,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 11:05:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662775786] [2022-07-12 11:05:41,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:41,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:05:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:05:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:05:41,336 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-12 11:05:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:43,115 INFO L93 Difference]: Finished difference Result 383 states and 535 transitions. [2022-07-12 11:05:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:05:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 166 [2022-07-12 11:05:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:43,117 INFO L225 Difference]: With dead ends: 383 [2022-07-12 11:05:43,117 INFO L226 Difference]: Without dead ends: 296 [2022-07-12 11:05:43,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2022-07-12 11:05:43,118 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 199 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:43,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 868 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 11:05:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-12 11:05:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2022-07-12 11:05:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 177 states have internal predecessors, (197), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (82), 59 states have call predecessors, (82), 61 states have call successors, (82) [2022-07-12 11:05:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 341 transitions. [2022-07-12 11:05:43,143 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 341 transitions. Word has length 166 [2022-07-12 11:05:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:43,147 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 341 transitions. [2022-07-12 11:05:43,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-12 11:05:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 341 transitions. [2022-07-12 11:05:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 11:05:43,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:43,148 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:43,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 11:05:43,149 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:43,149 INFO L85 PathProgramCache]: Analyzing trace with hash -119434237, now seen corresponding path program 1 times [2022-07-12 11:05:43,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:43,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134298562] [2022-07-12 11:05:43,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:43,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:05:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:05:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:05:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:05:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:05:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-12 11:05:43,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:43,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134298562] [2022-07-12 11:05:43,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134298562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:43,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:43,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:05:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373297864] [2022-07-12 11:05:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:05:43,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:43,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:05:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:05:43,357 INFO L87 Difference]: Start difference. First operand 261 states and 341 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 11:05:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:43,819 INFO L93 Difference]: Finished difference Result 395 states and 552 transitions. [2022-07-12 11:05:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:05:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2022-07-12 11:05:43,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:43,821 INFO L225 Difference]: With dead ends: 395 [2022-07-12 11:05:43,821 INFO L226 Difference]: Without dead ends: 301 [2022-07-12 11:05:43,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:05:43,824 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 91 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:43,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 574 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:05:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-12 11:05:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 282. [2022-07-12 11:05:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 184 states have (on average 1.1141304347826086) internal successors, (205), 187 states have internal predecessors, (205), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (104), 70 states have call predecessors, (104), 72 states have call successors, (104) [2022-07-12 11:05:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 382 transitions. [2022-07-12 11:05:43,866 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 382 transitions. Word has length 161 [2022-07-12 11:05:43,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:43,869 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 382 transitions. [2022-07-12 11:05:43,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 11:05:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 382 transitions. [2022-07-12 11:05:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 11:05:43,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:43,871 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2022-07-12 11:05:43,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 11:05:43,871 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:43,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:43,877 INFO L85 PathProgramCache]: Analyzing trace with hash -895461355, now seen corresponding path program 1 times [2022-07-12 11:05:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:43,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934945084] [2022-07-12 11:05:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:05:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:05:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:05:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:05:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:05:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 11:05:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-12 11:05:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:44,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934945084] [2022-07-12 11:05:44,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934945084] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:44,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050092734] [2022-07-12 11:05:44,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:44,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:44,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:44,301 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:44,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 11:05:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:44,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2829 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 11:05:44,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:44,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:05:45,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-12 11:05:45,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-12 11:05:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 11:05:45,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:45,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050092734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:45,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:45,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 31 [2022-07-12 11:05:45,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099237054] [2022-07-12 11:05:45,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:45,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 11:05:45,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:45,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 11:05:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:05:45,635 INFO L87 Difference]: Start difference. First operand 282 states and 382 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-12 11:05:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:46,193 INFO L93 Difference]: Finished difference Result 414 states and 551 transitions. [2022-07-12 11:05:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 11:05:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 156 [2022-07-12 11:05:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:46,195 INFO L225 Difference]: With dead ends: 414 [2022-07-12 11:05:46,195 INFO L226 Difference]: Without dead ends: 254 [2022-07-12 11:05:46,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 11:05:46,196 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 167 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:46,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 872 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 466 Invalid, 0 Unknown, 503 Unchecked, 0.5s Time] [2022-07-12 11:05:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-12 11:05:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2022-07-12 11:05:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 170 states have (on average 1.1058823529411765) internal successors, (188), 172 states have internal predecessors, (188), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (80), 56 states have call predecessors, (80), 57 states have call successors, (80) [2022-07-12 11:05:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 326 transitions. [2022-07-12 11:05:46,222 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 326 transitions. Word has length 156 [2022-07-12 11:05:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:46,222 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 326 transitions. [2022-07-12 11:05:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-12 11:05:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 326 transitions. [2022-07-12 11:05:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 11:05:46,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:46,224 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:46,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:46,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:46,440 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2124518673, now seen corresponding path program 1 times [2022-07-12 11:05:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262743006] [2022-07-12 11:05:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:05:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:05:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:05:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:05:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 11:05:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-12 11:05:46,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:46,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262743006] [2022-07-12 11:05:46,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262743006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:46,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:46,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 11:05:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385166743] [2022-07-12 11:05:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:46,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:05:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:46,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:05:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:46,740 INFO L87 Difference]: Start difference. First operand 252 states and 326 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-12 11:05:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:47,812 INFO L93 Difference]: Finished difference Result 260 states and 334 transitions. [2022-07-12 11:05:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:05:47,813 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-07-12 11:05:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:47,814 INFO L225 Difference]: With dead ends: 260 [2022-07-12 11:05:47,814 INFO L226 Difference]: Without dead ends: 258 [2022-07-12 11:05:47,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-12 11:05:47,815 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 75 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:47,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1132 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:05:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-12 11:05:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 251. [2022-07-12 11:05:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 170 states have (on average 1.1058823529411765) internal successors, (188), 172 states have internal predecessors, (188), 57 states have call successors, (57), 23 states have call predecessors, (57), 23 states have return successors, (79), 55 states have call predecessors, (79), 56 states have call successors, (79) [2022-07-12 11:05:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2022-07-12 11:05:47,834 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 159 [2022-07-12 11:05:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:47,834 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2022-07-12 11:05:47,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-12 11:05:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2022-07-12 11:05:47,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 11:05:47,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:47,835 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:47,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 11:05:47,836 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:47,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1713654364, now seen corresponding path program 1 times [2022-07-12 11:05:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:47,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804037140] [2022-07-12 11:05:47,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:47,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:05:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:05:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:05:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:05:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 11:05:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-12 11:05:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804037140] [2022-07-12 11:05:48,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804037140] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400078172] [2022-07-12 11:05:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:48,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:48,292 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:48,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 11:05:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-12 11:05:48,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:49,138 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:05:49,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-12 11:05:49,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 11:05:49,182 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:05:49,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2022-07-12 11:05:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 178 proven. 90 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:05:49,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-12 11:05:50,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400078172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:05:50,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:05:50,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 12] total 30 [2022-07-12 11:05:50,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488081315] [2022-07-12 11:05:50,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 11:05:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 11:05:50,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-07-12 11:05:50,227 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand has 30 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 12 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 12 states have call successors, (39) [2022-07-12 11:05:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:53,180 INFO L93 Difference]: Finished difference Result 429 states and 572 transitions. [2022-07-12 11:05:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 11:05:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 12 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 12 states have call successors, (39) Word has length 163 [2022-07-12 11:05:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:53,182 INFO L225 Difference]: With dead ends: 429 [2022-07-12 11:05:53,182 INFO L226 Difference]: Without dead ends: 255 [2022-07-12 11:05:53,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 327 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=325, Invalid=2327, Unknown=0, NotChecked=0, Total=2652 [2022-07-12 11:05:53,184 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 219 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:53,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1147 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2275 Invalid, 0 Unknown, 664 Unchecked, 2.3s Time] [2022-07-12 11:05:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-12 11:05:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 192. [2022-07-12 11:05:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 133 states have (on average 1.105263157894737) internal successors, (147), 137 states have internal predecessors, (147), 40 states have call successors, (40), 16 states have call predecessors, (40), 18 states have return successors, (52), 38 states have call predecessors, (52), 39 states have call successors, (52) [2022-07-12 11:05:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2022-07-12 11:05:53,198 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 163 [2022-07-12 11:05:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:53,199 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2022-07-12 11:05:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 12 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 12 states have call successors, (39) [2022-07-12 11:05:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2022-07-12 11:05:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 11:05:53,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:53,200 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:53,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:53,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:53,421 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2076699861, now seen corresponding path program 1 times [2022-07-12 11:05:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222242375] [2022-07-12 11:05:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:53,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 11:05:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-12 11:05:53,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222242375] [2022-07-12 11:05:53,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222242375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:53,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:53,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:05:53,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529893044] [2022-07-12 11:05:53,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:53,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:05:53,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:53,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:05:53,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:05:53,775 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 11:05:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:54,187 INFO L93 Difference]: Finished difference Result 283 states and 360 transitions. [2022-07-12 11:05:54,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:05:54,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 169 [2022-07-12 11:05:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:54,189 INFO L225 Difference]: With dead ends: 283 [2022-07-12 11:05:54,189 INFO L226 Difference]: Without dead ends: 186 [2022-07-12 11:05:54,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:54,190 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 84 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:54,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 412 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:05:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-12 11:05:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2022-07-12 11:05:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 125 states have (on average 1.104) internal successors, (138), 127 states have internal predecessors, (138), 38 states have call successors, (38), 16 states have call predecessors, (38), 17 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-12 11:05:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 219 transitions. [2022-07-12 11:05:54,215 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 219 transitions. Word has length 169 [2022-07-12 11:05:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:54,215 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 219 transitions. [2022-07-12 11:05:54,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 11:05:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 219 transitions. [2022-07-12 11:05:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-12 11:05:54,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:54,217 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:05:54,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 11:05:54,217 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash 248305514, now seen corresponding path program 1 times [2022-07-12 11:05:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:54,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948388334] [2022-07-12 11:05:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:05:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:05:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-12 11:05:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:54,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948388334] [2022-07-12 11:05:54,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948388334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:54,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:54,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:05:54,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761702603] [2022-07-12 11:05:54,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:54,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:05:54,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:05:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:05:54,488 INFO L87 Difference]: Start difference. First operand 181 states and 219 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 11:05:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:55,061 INFO L93 Difference]: Finished difference Result 260 states and 321 transitions. [2022-07-12 11:05:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:05:55,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 174 [2022-07-12 11:05:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:55,063 INFO L225 Difference]: With dead ends: 260 [2022-07-12 11:05:55,063 INFO L226 Difference]: Without dead ends: 178 [2022-07-12 11:05:55,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:05:55,063 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 51 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:55,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 440 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:05:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-12 11:05:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-12 11:05:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 123 states have (on average 1.0975609756097562) internal successors, (135), 124 states have internal predecessors, (135), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (42), 37 states have call predecessors, (42), 37 states have call successors, (42) [2022-07-12 11:05:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 215 transitions. [2022-07-12 11:05:55,076 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 215 transitions. Word has length 174 [2022-07-12 11:05:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:55,076 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 215 transitions. [2022-07-12 11:05:55,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 11:05:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 215 transitions. [2022-07-12 11:05:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-12 11:05:55,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:55,077 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:05:55,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 11:05:55,078 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1702864719, now seen corresponding path program 1 times [2022-07-12 11:05:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:55,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458437845] [2022-07-12 11:05:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:05:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:05:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-07-12 11:05:55,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458437845] [2022-07-12 11:05:55,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458437845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:55,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:55,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:05:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291549748] [2022-07-12 11:05:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:05:55,288 INFO L87 Difference]: Start difference. First operand 178 states and 215 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:05:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:55,808 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2022-07-12 11:05:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:05:55,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 176 [2022-07-12 11:05:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:55,809 INFO L225 Difference]: With dead ends: 186 [2022-07-12 11:05:55,809 INFO L226 Difference]: Without dead ends: 184 [2022-07-12 11:05:55,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:55,810 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 52 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:55,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 733 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:05:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-12 11:05:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-07-12 11:05:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 127 states have internal predecessors, (138), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (43), 38 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-12 11:05:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2022-07-12 11:05:55,823 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 176 [2022-07-12 11:05:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:55,823 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2022-07-12 11:05:55,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-12 11:05:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2022-07-12 11:05:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-12 11:05:55,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:55,824 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 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] [2022-07-12 11:05:55,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 11:05:55,825 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2119653097, now seen corresponding path program 1 times [2022-07-12 11:05:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:55,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917476973] [2022-07-12 11:05:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:05:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:05:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-12 11:05:56,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:56,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917476973] [2022-07-12 11:05:56,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917476973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:56,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:56,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-12 11:05:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654383823] [2022-07-12 11:05:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:56,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 11:05:56,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 11:05:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:05:56,245 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 11 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-12 11:05:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:57,675 INFO L93 Difference]: Finished difference Result 258 states and 317 transitions. [2022-07-12 11:05:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 11:05:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 11 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) Word has length 180 [2022-07-12 11:05:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:57,676 INFO L225 Difference]: With dead ends: 258 [2022-07-12 11:05:57,676 INFO L226 Difference]: Without dead ends: 182 [2022-07-12 11:05:57,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-07-12 11:05:57,677 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 153 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:57,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 929 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 11:05:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-12 11:05:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-12 11:05:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 127 states have internal predecessors, (138), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2022-07-12 11:05:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 217 transitions. [2022-07-12 11:05:57,694 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 217 transitions. Word has length 180 [2022-07-12 11:05:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 217 transitions. [2022-07-12 11:05:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 11 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-12 11:05:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 217 transitions. [2022-07-12 11:05:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 11:05:57,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:57,726 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:05:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 11:05:57,726 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:57,729 INFO L85 PathProgramCache]: Analyzing trace with hash 262901839, now seen corresponding path program 1 times [2022-07-12 11:05:57,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:57,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353745948] [2022-07-12 11:05:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:57,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:05:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:05:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:05:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:05:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-12 11:05:57,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:57,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353745948] [2022-07-12 11:05:57,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353745948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:57,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:57,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:05:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74374335] [2022-07-12 11:05:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:05:57,997 INFO L87 Difference]: Start difference. First operand 182 states and 217 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-12 11:05:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:58,532 INFO L93 Difference]: Finished difference Result 190 states and 225 transitions. [2022-07-12 11:05:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:05:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 192 [2022-07-12 11:05:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:58,534 INFO L225 Difference]: With dead ends: 190 [2022-07-12 11:05:58,534 INFO L226 Difference]: Without dead ends: 188 [2022-07-12 11:05:58,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:58,535 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 52 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:58,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 733 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:05:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-12 11:05:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2022-07-12 11:05:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 130 states have internal predecessors, (141), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (42), 38 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-12 11:05:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2022-07-12 11:05:58,548 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 192 [2022-07-12 11:05:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:58,548 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2022-07-12 11:05:58,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-12 11:05:58,548 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2022-07-12 11:05:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-12 11:05:58,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:58,549 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:58,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 11:05:58,550 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 547574295, now seen corresponding path program 1 times [2022-07-12 11:05:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279385242] [2022-07-12 11:05:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:05:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:05:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:05:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:05:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:05:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:05:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:05:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:05:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:05:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:05:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:05:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:05:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-07-12 11:05:59,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:59,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279385242] [2022-07-12 11:05:59,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279385242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:59,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:59,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 11:05:59,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475443606] [2022-07-12 11:05:59,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:59,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 11:05:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 11:05:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:05:59,074 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-12 11:06:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:00,312 INFO L93 Difference]: Finished difference Result 247 states and 294 transitions. [2022-07-12 11:06:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:06:00,313 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 196 [2022-07-12 11:06:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:00,314 INFO L225 Difference]: With dead ends: 247 [2022-07-12 11:06:00,314 INFO L226 Difference]: Without dead ends: 188 [2022-07-12 11:06:00,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:06:00,315 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 152 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:00,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 747 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:06:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-12 11:06:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-07-12 11:06:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 130 states have internal predecessors, (141), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-12 11:06:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2022-07-12 11:06:00,328 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 196 [2022-07-12 11:06:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:00,328 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2022-07-12 11:06:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-12 11:06:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2022-07-12 11:06:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-12 11:06:00,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:00,329 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:06:00,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 11:06:00,330 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1941778844, now seen corresponding path program 1 times [2022-07-12 11:06:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:00,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910614197] [2022-07-12 11:06:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:06:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:06:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:06:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:06:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:06:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:06:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:06:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 11:06:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-12 11:06:00,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:00,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910614197] [2022-07-12 11:06:00,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910614197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:00,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:00,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:06:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018476942] [2022-07-12 11:06:00,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:00,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:06:00,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:00,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:06:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:00,612 INFO L87 Difference]: Start difference. First operand 186 states and 219 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-12 11:06:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:01,703 INFO L93 Difference]: Finished difference Result 198 states and 233 transitions. [2022-07-12 11:06:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:06:01,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 199 [2022-07-12 11:06:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:01,704 INFO L225 Difference]: With dead ends: 198 [2022-07-12 11:06:01,704 INFO L226 Difference]: Without dead ends: 196 [2022-07-12 11:06:01,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:06:01,705 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 96 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:01,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 685 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:06:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-12 11:06:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2022-07-12 11:06:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 133 states have internal predecessors, (144), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-12 11:06:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 224 transitions. [2022-07-12 11:06:01,718 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 224 transitions. Word has length 199 [2022-07-12 11:06:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:01,719 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 224 transitions. [2022-07-12 11:06:01,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-12 11:06:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 224 transitions. [2022-07-12 11:06:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-12 11:06:01,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:01,720 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:01,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 11:06:01,720 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash -574364444, now seen corresponding path program 1 times [2022-07-12 11:06:01,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:01,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937990438] [2022-07-12 11:06:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:06:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:06:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:06:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:06:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:06:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:06:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:06:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 11:06:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-12 11:06:02,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:02,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937990438] [2022-07-12 11:06:02,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937990438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:02,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:02,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:06:02,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084160613] [2022-07-12 11:06:02,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:02,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:06:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:06:02,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:06:02,039 INFO L87 Difference]: Start difference. First operand 191 states and 224 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:06:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:02,765 INFO L93 Difference]: Finished difference Result 266 states and 318 transitions. [2022-07-12 11:06:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:06:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 203 [2022-07-12 11:06:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:02,766 INFO L225 Difference]: With dead ends: 266 [2022-07-12 11:06:02,766 INFO L226 Difference]: Without dead ends: 192 [2022-07-12 11:06:02,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:06:02,768 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 109 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:02,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 484 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:06:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-12 11:06:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-07-12 11:06:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 133 states have (on average 1.0902255639097744) internal successors, (145), 134 states have internal predecessors, (145), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-12 11:06:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 225 transitions. [2022-07-12 11:06:02,783 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 225 transitions. Word has length 203 [2022-07-12 11:06:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:02,783 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 225 transitions. [2022-07-12 11:06:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:06:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 225 transitions. [2022-07-12 11:06:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-12 11:06:02,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:02,785 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:02,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 11:06:02,785 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1436566363, now seen corresponding path program 1 times [2022-07-12 11:06:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:02,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87847307] [2022-07-12 11:06:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:06:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:06:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:06:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:06:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:06:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:06:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:06:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 11:06:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-12 11:06:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:03,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87847307] [2022-07-12 11:06:03,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87847307] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:03,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042271316] [2022-07-12 11:06:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:03,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:03,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:03,116 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:06:03,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 11:06:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:03,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:06:03,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-12 11:06:03,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:06:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-12 11:06:03,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042271316] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:03,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:06:03,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 10 [2022-07-12 11:06:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937365789] [2022-07-12 11:06:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:06:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:06:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:03,790 INFO L87 Difference]: Start difference. First operand 192 states and 225 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:06:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:03,910 INFO L93 Difference]: Finished difference Result 263 states and 313 transitions. [2022-07-12 11:06:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:06:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 204 [2022-07-12 11:06:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:03,911 INFO L225 Difference]: With dead ends: 263 [2022-07-12 11:06:03,911 INFO L226 Difference]: Without dead ends: 193 [2022-07-12 11:06:03,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:03,912 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 4 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:03,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 466 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:06:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-12 11:06:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-07-12 11:06:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 134 states have (on average 1.0895522388059702) internal successors, (146), 135 states have internal predecessors, (146), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-12 11:06:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 226 transitions. [2022-07-12 11:06:03,926 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 226 transitions. Word has length 204 [2022-07-12 11:06:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:03,926 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 226 transitions. [2022-07-12 11:06:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:06:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 226 transitions. [2022-07-12 11:06:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 11:06:03,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:03,927 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:03,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 11:06:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:04,149 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1330763706, now seen corresponding path program 1 times [2022-07-12 11:06:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:04,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080871554] [2022-07-12 11:06:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:04,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:06:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:06:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:06:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:06:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:06:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:06:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:06:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:06:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 56 proven. 5 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2022-07-12 11:06:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:05,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080871554] [2022-07-12 11:06:05,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080871554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:05,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361250015] [2022-07-12 11:06:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:05,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:05,048 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:06:05,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 11:06:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:05,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-12 11:06:05,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:05,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 11:06:06,487 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3439 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3439) |c_#memory_int|)) is different from true [2022-07-12 11:06:06,491 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3442 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3442) |c_#memory_int|)) is different from true [2022-07-12 11:06:06,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:06:06,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 11:06:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 110 proven. 12 refuted. 0 times theorem prover too weak. 310 trivial. 2 not checked. [2022-07-12 11:06:06,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:06:06,961 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memcpy_dest.base_8| Int) (v_ArrVal_3448 (Array Int Int))) (or (= (mod (select (select (store |c_#memory_int| |v_#Ultimate.C_memcpy_dest.base_8| v_ArrVal_3448) |c_aws_byte_cursor_read_~cur#1.base|) |c_aws_byte_cursor_read_~cur#1.offset|) 18446744073709551616) 0) (not (<= |v_#Ultimate.C_memcpy_dest.base_8| |c_aws_byte_cursor_read_~dest#1.base|)))) is different from false [2022-07-12 11:06:06,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361250015] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:06,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:06:06,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 42 [2022-07-12 11:06:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298020062] [2022-07-12 11:06:06,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:06:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 11:06:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 11:06:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1768, Unknown=3, NotChecked=258, Total=2162 [2022-07-12 11:06:06,964 INFO L87 Difference]: Start difference. First operand 193 states and 226 transitions. Second operand has 42 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 36 states have internal predecessors, (136), 18 states have call successors, (49), 8 states have call predecessors, (49), 9 states have return successors, (46), 17 states have call predecessors, (46), 17 states have call successors, (46) [2022-07-12 11:06:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:10,774 INFO L93 Difference]: Finished difference Result 305 states and 362 transitions. [2022-07-12 11:06:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 11:06:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 36 states have internal predecessors, (136), 18 states have call successors, (49), 8 states have call predecessors, (49), 9 states have return successors, (46), 17 states have call predecessors, (46), 17 states have call successors, (46) Word has length 205 [2022-07-12 11:06:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:10,775 INFO L225 Difference]: With dead ends: 305 [2022-07-12 11:06:10,775 INFO L226 Difference]: Without dead ends: 227 [2022-07-12 11:06:10,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 248 SyntacticMatches, 8 SemanticMatches, 76 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=552, Invalid=4987, Unknown=23, NotChecked=444, Total=6006 [2022-07-12 11:06:10,777 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 345 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1060 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:10,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1438 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2495 Invalid, 0 Unknown, 1060 Unchecked, 2.4s Time] [2022-07-12 11:06:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-12 11:06:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 210. [2022-07-12 11:06:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 148 states have (on average 1.0945945945945945) internal successors, (162), 149 states have internal predecessors, (162), 40 states have call successors, (40), 21 states have call predecessors, (40), 21 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-12 11:06:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 245 transitions. [2022-07-12 11:06:10,821 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 245 transitions. Word has length 205 [2022-07-12 11:06:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:10,821 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 245 transitions. [2022-07-12 11:06:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 3.4871794871794872) internal successors, (136), 36 states have internal predecessors, (136), 18 states have call successors, (49), 8 states have call predecessors, (49), 9 states have return successors, (46), 17 states have call predecessors, (46), 17 states have call successors, (46) [2022-07-12 11:06:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 245 transitions. [2022-07-12 11:06:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 11:06:10,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:10,823 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:10,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 11:06:11,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-12 11:06:11,044 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash -978119737, now seen corresponding path program 2 times [2022-07-12 11:06:11,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:11,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787777064] [2022-07-12 11:06:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:11,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:06:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:06:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:06:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:06:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:06:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:06:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:06:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-12 11:06:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-12 11:06:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:11,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787777064] [2022-07-12 11:06:11,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787777064] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:11,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831169774] [2022-07-12 11:06:11,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:06:11,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:11,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:11,555 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:06:11,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 11:06:12,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:06:12,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:06:12,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3368 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 11:06:12,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 62 proven. 3 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2022-07-12 11:06:12,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:06:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-12 11:06:12,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831169774] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:06:12,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:06:12,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-07-12 11:06:12,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469179337] [2022-07-12 11:06:12,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:06:12,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:06:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:12,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:06:12,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:06:12,823 INFO L87 Difference]: Start difference. First operand 210 states and 245 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 4 states have call successors, (40), 6 states have call predecessors, (40), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-12 11:06:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:14,857 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2022-07-12 11:06:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:06:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 4 states have call successors, (40), 6 states have call predecessors, (40), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 206 [2022-07-12 11:06:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:14,859 INFO L225 Difference]: With dead ends: 275 [2022-07-12 11:06:14,859 INFO L226 Difference]: Without dead ends: 202 [2022-07-12 11:06:14,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 451 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-07-12 11:06:14,860 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 115 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:14,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1006 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 11:06:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-12 11:06:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-07-12 11:06:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.0769230769230769) internal successors, (154), 143 states have internal predecessors, (154), 38 states have call successors, (38), 21 states have call predecessors, (38), 20 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2022-07-12 11:06:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 231 transitions. [2022-07-12 11:06:14,878 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 231 transitions. Word has length 206 [2022-07-12 11:06:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:14,879 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 231 transitions. [2022-07-12 11:06:14,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 11 states have internal predecessors, (98), 4 states have call successors, (40), 6 states have call predecessors, (40), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-12 11:06:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 231 transitions. [2022-07-12 11:06:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-12 11:06:14,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:14,881 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:14,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 11:06:15,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-12 11:06:15,093 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1785502679, now seen corresponding path program 1 times [2022-07-12 11:06:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:15,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215494207] [2022-07-12 11:06:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:15,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:06:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:06:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:06:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 11:06:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:06:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:06:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 11:06:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 11:06:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:06:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-12 11:06:15,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:15,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215494207] [2022-07-12 11:06:15,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215494207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:15,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454141087] [2022-07-12 11:06:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:15,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:15,449 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:06:15,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 11:06:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:16,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 11:06:16,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-12 11:06:16,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:06:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-12 11:06:16,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454141087] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:06:16,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:06:16,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-07-12 11:06:16,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199278858] [2022-07-12 11:06:16,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:06:16,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:06:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:16,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:06:16,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:06:16,656 INFO L87 Difference]: Start difference. First operand 202 states and 231 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:06:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:17,798 INFO L93 Difference]: Finished difference Result 208 states and 236 transitions. [2022-07-12 11:06:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 11:06:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 207 [2022-07-12 11:06:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:17,799 INFO L225 Difference]: With dead ends: 208 [2022-07-12 11:06:17,799 INFO L226 Difference]: Without dead ends: 206 [2022-07-12 11:06:17,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 453 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:06:17,800 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 91 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:17,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 711 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:06:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-12 11:06:17,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-12 11:06:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 146 states have (on average 1.0753424657534247) internal successors, (157), 146 states have internal predecessors, (157), 38 states have call successors, (38), 22 states have call predecessors, (38), 21 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2022-07-12 11:06:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 234 transitions. [2022-07-12 11:06:17,814 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 234 transitions. Word has length 207 [2022-07-12 11:06:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:17,815 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 234 transitions. [2022-07-12 11:06:17,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:06:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 234 transitions. [2022-07-12 11:06:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-12 11:06:17,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:17,816 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:17,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 11:06:18,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:18,016 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1258607831, now seen corresponding path program 1 times [2022-07-12 11:06:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:18,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185551375] [2022-07-12 11:06:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:06:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:06:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:06:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:06:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:06:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:06:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:06:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:06:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-12 11:06:18,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:18,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185551375] [2022-07-12 11:06:18,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185551375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:18,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:18,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:06:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339736372] [2022-07-12 11:06:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:18,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:06:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:06:18,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:18,429 INFO L87 Difference]: Start difference. First operand 206 states and 234 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-12 11:06:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:19,139 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2022-07-12 11:06:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:06:19,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 209 [2022-07-12 11:06:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:19,140 INFO L225 Difference]: With dead ends: 214 [2022-07-12 11:06:19,140 INFO L226 Difference]: Without dead ends: 212 [2022-07-12 11:06:19,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:06:19,141 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 83 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:19,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 727 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:06:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-12 11:06:19,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-07-12 11:06:19,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 149 states have (on average 1.0738255033557047) internal successors, (160), 149 states have internal predecessors, (160), 39 states have call successors, (39), 23 states have call predecessors, (39), 22 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-07-12 11:06:19,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 239 transitions. [2022-07-12 11:06:19,156 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 239 transitions. Word has length 209 [2022-07-12 11:06:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:19,156 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 239 transitions. [2022-07-12 11:06:19,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-12 11:06:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 239 transitions. [2022-07-12 11:06:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-12 11:06:19,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:19,158 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:19,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 11:06:19,158 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2047881201, now seen corresponding path program 1 times [2022-07-12 11:06:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:19,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351785953] [2022-07-12 11:06:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:19,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:06:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:06:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:06:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:06:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:06:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:06:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:06:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:06:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-07-12 11:06:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:20,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351785953] [2022-07-12 11:06:20,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351785953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:20,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:20,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 11:06:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172474548] [2022-07-12 11:06:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 11:06:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 11:06:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:06:20,153 INFO L87 Difference]: Start difference. First operand 211 states and 239 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 10 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2022-07-12 11:06:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:21,790 INFO L93 Difference]: Finished difference Result 289 states and 341 transitions. [2022-07-12 11:06:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 11:06:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 10 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) Word has length 213 [2022-07-12 11:06:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:21,791 INFO L225 Difference]: With dead ends: 289 [2022-07-12 11:06:21,791 INFO L226 Difference]: Without dead ends: 236 [2022-07-12 11:06:21,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:06:21,792 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 212 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:21,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 652 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 11:06:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-12 11:06:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 215. [2022-07-12 11:06:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 151 states have (on average 1.0728476821192052) internal successors, (162), 152 states have internal predecessors, (162), 40 states have call successors, (40), 23 states have call predecessors, (40), 23 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-12 11:06:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 244 transitions. [2022-07-12 11:06:21,809 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 244 transitions. Word has length 213 [2022-07-12 11:06:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 244 transitions. [2022-07-12 11:06:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 10 states have call successors, (26), 4 states have call predecessors, (26), 3 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2022-07-12 11:06:21,809 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 244 transitions. [2022-07-12 11:06:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-12 11:06:21,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:21,810 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2022-07-12 11:06:21,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 11:06:21,810 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 946266547, now seen corresponding path program 1 times [2022-07-12 11:06:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:21,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838793248] [2022-07-12 11:06:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:06:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:06:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:06:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:06:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:06:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:06:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:06:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:06:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 11:06:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2022-07-12 11:06:22,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:22,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838793248] [2022-07-12 11:06:22,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838793248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:22,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:22,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:06:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786766145] [2022-07-12 11:06:22,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:22,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:06:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:06:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:06:22,050 INFO L87 Difference]: Start difference. First operand 215 states and 244 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 11:06:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:22,611 INFO L93 Difference]: Finished difference Result 276 states and 320 transitions. [2022-07-12 11:06:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:06:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 217 [2022-07-12 11:06:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:22,612 INFO L225 Difference]: With dead ends: 276 [2022-07-12 11:06:22,612 INFO L226 Difference]: Without dead ends: 227 [2022-07-12 11:06:22,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:06:22,613 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 79 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:22,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 615 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:06:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-12 11:06:22,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 219. [2022-07-12 11:06:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 154 states have (on average 1.0714285714285714) internal successors, (165), 154 states have internal predecessors, (165), 41 states have call successors, (41), 23 states have call predecessors, (41), 23 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2022-07-12 11:06:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 249 transitions. [2022-07-12 11:06:22,630 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 249 transitions. Word has length 217 [2022-07-12 11:06:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:22,630 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 249 transitions. [2022-07-12 11:06:22,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-12 11:06:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 249 transitions. [2022-07-12 11:06:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-12 11:06:22,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:22,632 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 11:06:22,632 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:22,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:22,632 INFO L85 PathProgramCache]: Analyzing trace with hash 75429853, now seen corresponding path program 1 times [2022-07-12 11:06:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:22,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716412394] [2022-07-12 11:06:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:06:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:06:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:06:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:06:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:06:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:06:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:06:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 11:06:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 11:06:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 11:06:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-07-12 11:06:22,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:22,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716412394] [2022-07-12 11:06:22,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716412394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:22,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:22,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:06:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464083929] [2022-07-12 11:06:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:06:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:06:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:22,946 INFO L87 Difference]: Start difference. First operand 219 states and 249 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 11:06:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:23,633 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2022-07-12 11:06:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:06:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 225 [2022-07-12 11:06:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:23,635 INFO L225 Difference]: With dead ends: 227 [2022-07-12 11:06:23,635 INFO L226 Difference]: Without dead ends: 225 [2022-07-12 11:06:23,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:06:23,636 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 83 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:23,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 714 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:06:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-07-12 11:06:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2022-07-12 11:06:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 157 states have (on average 1.070063694267516) internal successors, (168), 157 states have internal predecessors, (168), 42 states have call successors, (42), 24 states have call predecessors, (42), 24 states have return successors, (44), 42 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-12 11:06:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2022-07-12 11:06:23,660 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 225 [2022-07-12 11:06:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:23,661 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2022-07-12 11:06:23,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 11:06:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2022-07-12 11:06:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 11:06:23,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:23,662 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:23,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 11:06:23,663 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1997797865, now seen corresponding path program 1 times [2022-07-12 11:06:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726623570] [2022-07-12 11:06:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:23,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:06:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:06:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:06:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:06:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:06:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:06:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:06:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:06:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:06:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:06:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 11:06:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:06:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:06:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:06:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:06:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:06:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:06:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:06:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:06:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 11:06:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 66 proven. 5 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-07-12 11:06:24,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:24,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726623570] [2022-07-12 11:06:24,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726623570] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:24,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979557762] [2022-07-12 11:06:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:24,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:24,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:24,880 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:06:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 11:06:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 3285 conjuncts, 125 conjunts are in the unsatisfiable core [2022-07-12 11:06:25,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:25,858 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 37 treesize of output 25