./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_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-?-f4b24e3 [2022-07-13 22:45:19,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:45:19,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:45:19,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:45:19,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:45:19,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:45:19,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:45:19,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:45:19,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:45:19,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:45:19,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:45:19,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:45:19,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:45:19,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:45:19,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:45:19,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:45:19,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:45:19,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:45:19,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:45:19,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:45:19,282 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:45:19,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:45:19,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:45:19,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:45:19,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:45:19,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:45:19,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:45:19,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:45:19,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:45:19,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:45:19,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:45:19,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:45:19,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:45:19,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:45:19,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:45:19,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:45:19,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:45:19,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:45:19,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:45:19,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:45:19,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:45:19,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:45:19,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:45:19,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:45:19,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:45:19,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:45:19,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:45:19,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:45:19,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:45:19,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:45:19,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:45:19,339 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:45:19,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:45:19,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:45:19,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:45:19,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:45:19,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:45:19,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:45:19,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:45:19,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:45:19,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:45:19,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:45:19,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:45:19,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:45:19,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:45:19,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:45:19,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:45:19,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:45:19,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:45:19,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:45:19,342 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:45:19,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:45:19,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:45:19,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb [2022-07-13 22:45:19,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:45:19,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:45:19,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:45:19,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:45:19,527 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:45:19,528 INFO L432 ainManager$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 [2022-07-13 22:45:19,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18274c61/f3635b75a8274647b5235b748a584e31/FLAG51f463c7f [2022-07-13 22:45:20,033 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:45:20,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-07-13 22:45:20,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18274c61/f3635b75a8274647b5235b748a584e31/FLAG51f463c7f [2022-07-13 22:45:20,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18274c61/f3635b75a8274647b5235b748a584e31 [2022-07-13 22:45:20,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:45:20,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:45:20,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:45:20,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:45:20,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:45:20,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:45:20" (1/1) ... [2022-07-13 22:45:20,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d334b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:20, skipping insertion in model container [2022-07-13 22:45:20,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:45:20" (1/1) ... [2022-07-13 22:45:20,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:45:20,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:45:20,704 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] [2022-07-13 22:45:20,711 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] [2022-07-13 22:45:21,237 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,243 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,243 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,244 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,435 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:45:21,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:45:21,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:45:21,438 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:45:21,439 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:45:21,439 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:45:21,440 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:45:21,440 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:45:21,440 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:45:21,441 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:45:21,552 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:45:21,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,640 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:45:21,748 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:45:21,766 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] [2022-07-13 22:45:21,767 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] [2022-07-13 22:45:21,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,824 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,824 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,855 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:45:21,856 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:45:21,858 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:45:21,859 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:45:21,859 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:45:21,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:45:21,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:45:21,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:45:21,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:45:21,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:45:21,878 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:45:21,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,923 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:45:21,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:45:22,119 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:45:22,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22 WrapperNode [2022-07-13 22:45:22,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:45:22,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:45:22,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:45:22,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:45:22,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,309 INFO L137 Inliner]: procedures = 690, calls = 2631, calls flagged for inlining = 61, calls inlined = 10, statements flattened = 959 [2022-07-13 22:45:22,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:45:22,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:45:22,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:45:22,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:45:22,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:45:22,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:45:22,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:45:22,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:45:22,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (1/1) ... [2022-07-13 22:45:22,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:45:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:22,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:45:22,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:45:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-07-13 22:45:22,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-07-13 22:45:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-13 22:45:22,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-13 22:45:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:45:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:45:22,447 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:45:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-13 22:45:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-13 22:45:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-13 22:45:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:45:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-13 22:45:22,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-13 22:45:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:45:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:45:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:45:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:45:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:45:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:45:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:45:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:45:22,449 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:45:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-13 22:45:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-13 22:45:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:45:22,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:45:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:45:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:45:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:45:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:45:22,451 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:45:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:45:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-13 22:45:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:45:22,605 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:45:22,622 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:45:23,301 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:45:23,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:45:23,306 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:45:23,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:45:23 BoogieIcfgContainer [2022-07-13 22:45:23,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:45:23,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:45:23,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:45:23,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:45:23,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:45:20" (1/3) ... [2022-07-13 22:45:23,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0985fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:45:23, skipping insertion in model container [2022-07-13 22:45:23,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:45:22" (2/3) ... [2022-07-13 22:45:23,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0985fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:45:23, skipping insertion in model container [2022-07-13 22:45:23,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:45:23" (3/3) ... [2022-07-13 22:45:23,313 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_u8_harness.i [2022-07-13 22:45:23,321 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:45:23,322 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:45:23,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:45:23,354 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@299bcca0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5de6d862 [2022-07-13 22:45:23,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:45:23,357 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) [2022-07-13 22:45:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:45:23,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:23,365 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] [2022-07-13 22:45:23,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:23,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1911600459, now seen corresponding path program 1 times [2022-07-13 22:45:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:23,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97229270] [2022-07-13 22:45:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:45:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:45:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:45:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:45:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:45:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:45:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:45:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:45:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-13 22:45:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97229270] [2022-07-13 22:45:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97229270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:24,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:45:24,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:45:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501912434] [2022-07-13 22:45:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:45:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:45:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:45:24,043 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) [2022-07-13 22:45:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:24,238 INFO L93 Difference]: Finished difference Result 261 states and 387 transitions. [2022-07-13 22:45:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:45:24,240 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 [2022-07-13 22:45:24,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:24,246 INFO L225 Difference]: With dead ends: 261 [2022-07-13 22:45:24,246 INFO L226 Difference]: Without dead ends: 126 [2022-07-13 22:45:24,249 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 [2022-07-13 22:45:24,251 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:24,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 233 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:45:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-13 22:45:24,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-13 22:45:24,299 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) [2022-07-13 22:45:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 173 transitions. [2022-07-13 22:45:24,302 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 173 transitions. Word has length 107 [2022-07-13 22:45:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:24,302 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 173 transitions. [2022-07-13 22:45:24,302 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) [2022-07-13 22:45:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 173 transitions. [2022-07-13 22:45:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:45:24,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:24,305 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] [2022-07-13 22:45:24,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:45:24,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash 856378377, now seen corresponding path program 1 times [2022-07-13 22:45:24,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:24,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899022237] [2022-07-13 22:45:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:24,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 22:45:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:45:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:45:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:45:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:45:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:45:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:45:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:45:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-13 22:45:24,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:24,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899022237] [2022-07-13 22:45:24,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899022237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:24,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351362591] [2022-07-13 22:45:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:24,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:24,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:24,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:24,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:45:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:24,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:45:24,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 22:45:25,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:25,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351362591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:25,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:25,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:45:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552581633] [2022-07-13 22:45:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:45:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:45:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:45:25,142 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) [2022-07-13 22:45:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:25,311 INFO L93 Difference]: Finished difference Result 236 states and 335 transitions. [2022-07-13 22:45:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:45:25,313 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 [2022-07-13 22:45:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:25,315 INFO L225 Difference]: With dead ends: 236 [2022-07-13 22:45:25,315 INFO L226 Difference]: Without dead ends: 129 [2022-07-13 22:45:25,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:45:25,317 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 [2022-07-13 22:45:25,317 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] [2022-07-13 22:45:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-13 22:45:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-13 22:45:25,328 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) [2022-07-13 22:45:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 183 transitions. [2022-07-13 22:45:25,330 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 183 transitions. Word has length 107 [2022-07-13 22:45:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:25,330 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 183 transitions. [2022-07-13 22:45:25,331 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) [2022-07-13 22:45:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 183 transitions. [2022-07-13 22:45:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 22:45:25,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:25,332 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] [2022-07-13 22:45:25,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:45:25,546 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 [2022-07-13 22:45:25,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1509088892, now seen corresponding path program 1 times [2022-07-13 22:45:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:25,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419548873] [2022-07-13 22:45:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:25,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:45:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:45:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:45:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:45:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:45:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:45:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:45:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:45:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:45:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-13 22:45:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419548873] [2022-07-13 22:45:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419548873] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882052546] [2022-07-13 22:45:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:25,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:25,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:45:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:26,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:45:26,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-13 22:45:26,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:26,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882052546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:26,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:26,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-13 22:45:26,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578151129] [2022-07-13 22:45:26,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:26,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:45:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:45:26,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:45:26,396 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) [2022-07-13 22:45:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:26,568 INFO L93 Difference]: Finished difference Result 226 states and 322 transitions. [2022-07-13 22:45:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:45:26,569 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 [2022-07-13 22:45:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:26,570 INFO L225 Difference]: With dead ends: 226 [2022-07-13 22:45:26,570 INFO L226 Difference]: Without dead ends: 129 [2022-07-13 22:45:26,571 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 [2022-07-13 22:45:26,572 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:26,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 583 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:45:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-13 22:45:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-13 22:45:26,580 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) [2022-07-13 22:45:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 181 transitions. [2022-07-13 22:45:26,581 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 181 transitions. Word has length 109 [2022-07-13 22:45:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 181 transitions. [2022-07-13 22:45:26,582 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) [2022-07-13 22:45:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 181 transitions. [2022-07-13 22:45:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 22:45:26,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:26,588 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] [2022-07-13 22:45:26,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:45:26,799 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 [2022-07-13 22:45:26,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1446621481, now seen corresponding path program 2 times [2022-07-13 22:45:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:26,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302025286] [2022-07-13 22:45:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:45:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:45:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:45:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:45:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:45:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:45:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 22:45:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:45:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:45:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-13 22:45:27,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:27,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302025286] [2022-07-13 22:45:27,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302025286] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:27,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842164399] [2022-07-13 22:45:27,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:45:27,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:27,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:27,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:27,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:45:27,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:45:27,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:45:27,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:45:27,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-13 22:45:27,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:27,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842164399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:27,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:27,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 12 [2022-07-13 22:45:27,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970459273] [2022-07-13 22:45:27,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:27,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:45:27,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:45:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:45:27,877 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) [2022-07-13 22:45:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:28,010 INFO L93 Difference]: Finished difference Result 221 states and 311 transitions. [2022-07-13 22:45:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:45:28,010 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 [2022-07-13 22:45:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:28,011 INFO L225 Difference]: With dead ends: 221 [2022-07-13 22:45:28,012 INFO L226 Difference]: Without dead ends: 129 [2022-07-13 22:45:28,012 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 [2022-07-13 22:45:28,013 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 [2022-07-13 22:45:28,013 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] [2022-07-13 22:45:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-13 22:45:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-13 22:45:28,020 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) [2022-07-13 22:45:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2022-07-13 22:45:28,021 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 111 [2022-07-13 22:45:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:28,022 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2022-07-13 22:45:28,022 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) [2022-07-13 22:45:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2022-07-13 22:45:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 22:45:28,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:28,023 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] [2022-07-13 22:45:28,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:28,240 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 [2022-07-13 22:45:28,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1547321138, now seen corresponding path program 3 times [2022-07-13 22:45:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:28,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472045966] [2022-07-13 22:45:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:45:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:45:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:45:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:45:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:45:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:45:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-13 22:45:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472045966] [2022-07-13 22:45:28,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472045966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748304969] [2022-07-13 22:45:28,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:45:28,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:28,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:28,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:28,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:45:29,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 22:45:29,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:45:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 22:45:29,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-13 22:45:29,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:29,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748304969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:29,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:29,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-13 22:45:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758314551] [2022-07-13 22:45:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:29,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:45:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:45:29,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:45:29,128 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) [2022-07-13 22:45:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:29,204 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2022-07-13 22:45:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:45:29,205 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 [2022-07-13 22:45:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:29,206 INFO L225 Difference]: With dead ends: 216 [2022-07-13 22:45:29,206 INFO L226 Difference]: Without dead ends: 129 [2022-07-13 22:45:29,206 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 [2022-07-13 22:45:29,207 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 [2022-07-13 22:45:29,207 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] [2022-07-13 22:45:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-13 22:45:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-13 22:45:29,214 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) [2022-07-13 22:45:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2022-07-13 22:45:29,214 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 113 [2022-07-13 22:45:29,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:29,215 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2022-07-13 22:45:29,215 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) [2022-07-13 22:45:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2022-07-13 22:45:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 22:45:29,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:29,216 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] [2022-07-13 22:45:29,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:29,436 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 [2022-07-13 22:45:29,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:29,436 INFO L85 PathProgramCache]: Analyzing trace with hash -126288589, now seen corresponding path program 4 times [2022-07-13 22:45:29,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:29,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283153325] [2022-07-13 22:45:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:45:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:45:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:45:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:45:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:45:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:45:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 22:45:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:29,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283153325] [2022-07-13 22:45:29,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283153325] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:29,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546534661] [2022-07-13 22:45:29,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:45:29,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:29,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:29,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:29,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:45:30,083 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:45:30,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:45:30,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:45:30,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-13 22:45:30,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:30,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546534661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:30,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:30,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2022-07-13 22:45:30,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445036371] [2022-07-13 22:45:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:30,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:45:30,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:45:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:45:30,245 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) [2022-07-13 22:45:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:30,626 INFO L93 Difference]: Finished difference Result 205 states and 277 transitions. [2022-07-13 22:45:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:45:30,627 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 [2022-07-13 22:45:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:30,628 INFO L225 Difference]: With dead ends: 205 [2022-07-13 22:45:30,628 INFO L226 Difference]: Without dead ends: 129 [2022-07-13 22:45:30,628 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 [2022-07-13 22:45:30,629 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 [2022-07-13 22:45:30,629 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] [2022-07-13 22:45:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-13 22:45:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-13 22:45:30,635 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) [2022-07-13 22:45:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 176 transitions. [2022-07-13 22:45:30,636 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 176 transitions. Word has length 115 [2022-07-13 22:45:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:30,637 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 176 transitions. [2022-07-13 22:45:30,637 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) [2022-07-13 22:45:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 176 transitions. [2022-07-13 22:45:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 22:45:30,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:30,638 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] [2022-07-13 22:45:30,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:30,838 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 [2022-07-13 22:45:30,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1860935384, now seen corresponding path program 1 times [2022-07-13 22:45:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:30,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189481403] [2022-07-13 22:45:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:45:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:45:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:45:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:45:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:45:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:45:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-13 22:45:31,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:31,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189481403] [2022-07-13 22:45:31,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189481403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:31,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:45:31,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:45:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095982388] [2022-07-13 22:45:31,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:31,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:45:31,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:31,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:45:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:45:31,247 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) [2022-07-13 22:45:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:31,834 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2022-07-13 22:45:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:45:31,835 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 [2022-07-13 22:45:31,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:31,836 INFO L225 Difference]: With dead ends: 141 [2022-07-13 22:45:31,836 INFO L226 Difference]: Without dead ends: 139 [2022-07-13 22:45:31,836 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 [2022-07-13 22:45:31,837 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 [2022-07-13 22:45:31,837 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] [2022-07-13 22:45:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-13 22:45:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2022-07-13 22:45:31,848 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) [2022-07-13 22:45:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 194 transitions. [2022-07-13 22:45:31,850 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 194 transitions. Word has length 117 [2022-07-13 22:45:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 194 transitions. [2022-07-13 22:45:31,854 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) [2022-07-13 22:45:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 194 transitions. [2022-07-13 22:45:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-13 22:45:31,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:31,856 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] [2022-07-13 22:45:31,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:45:31,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1848112160, now seen corresponding path program 1 times [2022-07-13 22:45:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:31,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258971986] [2022-07-13 22:45:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:31,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:45:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:45:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:45:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:45:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:45:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:45:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-13 22:45:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:32,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258971986] [2022-07-13 22:45:32,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258971986] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:32,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114707771] [2022-07-13 22:45:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:32,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:32,550 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:32,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:45:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:32,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-13 22:45:32,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-13 22:45:33,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:33,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114707771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:33,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:33,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 22 [2022-07-13 22:45:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807579752] [2022-07-13 22:45:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:33,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:45:33,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:45:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:45:33,351 INFO L87 Difference]: Start difference. First operand 138 states and 194 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-13 22:45:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:33,807 INFO L93 Difference]: Finished difference Result 268 states and 377 transitions. [2022-07-13 22:45:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:45:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 121 [2022-07-13 22:45:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:33,809 INFO L225 Difference]: With dead ends: 268 [2022-07-13 22:45:33,809 INFO L226 Difference]: Without dead ends: 145 [2022-07-13 22:45:33,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:45:33,810 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 69 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:33,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 895 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 146 Unchecked, 0.3s Time] [2022-07-13 22:45:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-13 22:45:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 138. [2022-07-13 22:45:33,817 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) [2022-07-13 22:45:33,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2022-07-13 22:45:33,817 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 121 [2022-07-13 22:45:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:33,818 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2022-07-13 22:45:33,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-13 22:45:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2022-07-13 22:45:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 22:45:33,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:33,819 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] [2022-07-13 22:45:33,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:34,035 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 [2022-07-13 22:45:34,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1143204392, now seen corresponding path program 2 times [2022-07-13 22:45:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:34,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434608364] [2022-07-13 22:45:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 22:45:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 22:45:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:45:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:45:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:45:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:45:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:45:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:45:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 22:45:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:45:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:45:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:45:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-13 22:45:34,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434608364] [2022-07-13 22:45:34,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434608364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793778775] [2022-07-13 22:45:34,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:45:34,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:34,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:34,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:45:34,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:45:34,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:45:34,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:45:34,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-13 22:45:34,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:34,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793778775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:34,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:34,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 22:45:34,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627848594] [2022-07-13 22:45:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:34,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:45:34,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:45:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:45:34,935 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) [2022-07-13 22:45:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:35,118 INFO L93 Difference]: Finished difference Result 262 states and 377 transitions. [2022-07-13 22:45:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:45:35,119 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 [2022-07-13 22:45:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:35,121 INFO L225 Difference]: With dead ends: 262 [2022-07-13 22:45:35,121 INFO L226 Difference]: Without dead ends: 143 [2022-07-13 22:45:35,122 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 [2022-07-13 22:45:35,123 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 [2022-07-13 22:45:35,123 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] [2022-07-13 22:45:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-07-13 22:45:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-07-13 22:45:35,134 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) [2022-07-13 22:45:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 206 transitions. [2022-07-13 22:45:35,135 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 206 transitions. Word has length 125 [2022-07-13 22:45:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:35,136 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 206 transitions. [2022-07-13 22:45:35,136 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) [2022-07-13 22:45:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 206 transitions. [2022-07-13 22:45:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 22:45:35,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:35,137 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] [2022-07-13 22:45:35,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:35,360 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 [2022-07-13 22:45:35,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:35,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash -898461391, now seen corresponding path program 1 times [2022-07-13 22:45:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:35,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243750591] [2022-07-13 22:45:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:35,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:45:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:45:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:45:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:45:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:45:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:45:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:45:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:45:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:45:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-13 22:45:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243750591] [2022-07-13 22:45:35,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243750591] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163976063] [2022-07-13 22:45:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:35,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:35,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:35,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:45:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:36,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-13 22:45:36,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 17 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-13 22:45:37,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:45:37,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-13 22:45:37,612 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-13 22:45:37,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-07-13 22:45:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 22:45:37,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163976063] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:45:37,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:45:37,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 28 [2022-07-13 22:45:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328084537] [2022-07-13 22:45:37,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:45:37,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 22:45:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 22:45:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-07-13 22:45:37,629 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) [2022-07-13 22:45:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:42,438 INFO L93 Difference]: Finished difference Result 482 states and 766 transitions. [2022-07-13 22:45:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:45:42,438 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 [2022-07-13 22:45:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:42,440 INFO L225 Difference]: With dead ends: 482 [2022-07-13 22:45:42,440 INFO L226 Difference]: Without dead ends: 352 [2022-07-13 22:45:42,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 250 SyntacticMatches, 25 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=356, Invalid=2614, Unknown=0, NotChecked=0, Total=2970 [2022-07-13 22:45:42,442 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 284 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 4436 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:42,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2541 Invalid, 5112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 4436 Invalid, 0 Unknown, 525 Unchecked, 4.0s Time] [2022-07-13 22:45:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-07-13 22:45:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 186. [2022-07-13 22:45:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 123 states have internal predecessors, (139), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (79), 48 states have call predecessors, (79), 51 states have call successors, (79) [2022-07-13 22:45:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2022-07-13 22:45:42,459 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 270 transitions. Word has length 127 [2022-07-13 22:45:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:42,459 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 270 transitions. [2022-07-13 22:45:42,459 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) [2022-07-13 22:45:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 270 transitions. [2022-07-13 22:45:42,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 22:45:42,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:42,461 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:45:42,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 22:45:42,678 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 [2022-07-13 22:45:42,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1294700289, now seen corresponding path program 1 times [2022-07-13 22:45:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:42,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627967657] [2022-07-13 22:45:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:45:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:45:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:45:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:45:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 22:45:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:45:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:45:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:45:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:45:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:45:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627967657] [2022-07-13 22:45:42,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627967657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451106999] [2022-07-13 22:45:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:42,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:42,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:42,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:42,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:45:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:45:43,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-13 22:45:43,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:43,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451106999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:43,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:43,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-13 22:45:43,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140883066] [2022-07-13 22:45:43,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:43,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:45:43,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:45:43,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:45:43,396 INFO L87 Difference]: Start difference. First operand 186 states and 270 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-13 22:45:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:43,519 INFO L93 Difference]: Finished difference Result 336 states and 515 transitions. [2022-07-13 22:45:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:45:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 135 [2022-07-13 22:45:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:43,520 INFO L225 Difference]: With dead ends: 336 [2022-07-13 22:45:43,520 INFO L226 Difference]: Without dead ends: 165 [2022-07-13 22:45:43,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:45:43,522 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 3 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:43,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 452 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-07-13 22:45:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-13 22:45:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2022-07-13 22:45:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 107 states have internal predecessors, (121), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (67), 43 states have call predecessors, (67), 45 states have call successors, (67) [2022-07-13 22:45:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2022-07-13 22:45:43,533 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 135 [2022-07-13 22:45:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:43,534 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2022-07-13 22:45:43,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-13 22:45:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2022-07-13 22:45:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 22:45:43,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:43,536 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 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] [2022-07-13 22:45:43,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-13 22:45:43,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:43,756 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash 46301193, now seen corresponding path program 1 times [2022-07-13 22:45:43,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:43,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648470441] [2022-07-13 22:45:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:45:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:45:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:45:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:45:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:45:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:45:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:45:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:45:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:45:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-13 22:45:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:44,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648470441] [2022-07-13 22:45:44,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648470441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:44,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686583898] [2022-07-13 22:45:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:44,034 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:44,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:45:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:45:44,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 22:45:44,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:44,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686583898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:44,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:44,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 22:45:44,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603978255] [2022-07-13 22:45:44,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:44,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:45:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:44,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:45:44,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:45:44,490 INFO L87 Difference]: Start difference. First operand 164 states and 234 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, (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) [2022-07-13 22:45:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:44,616 INFO L93 Difference]: Finished difference Result 277 states and 393 transitions. [2022-07-13 22:45:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:45:44,617 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, (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 139 [2022-07-13 22:45:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:44,620 INFO L225 Difference]: With dead ends: 277 [2022-07-13 22:45:44,620 INFO L226 Difference]: Without dead ends: 164 [2022-07-13 22:45:44,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:45:44,622 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 10 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:44,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1252 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:45:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-13 22:45:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-13 22:45:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 107 states have internal predecessors, (121), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (65), 43 states have call predecessors, (65), 45 states have call successors, (65) [2022-07-13 22:45:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2022-07-13 22:45:44,632 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 139 [2022-07-13 22:45:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:44,632 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2022-07-13 22:45:44,633 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, (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) [2022-07-13 22:45:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2022-07-13 22:45:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 22:45:44,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:44,634 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] [2022-07-13 22:45:44,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:44,853 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,SelfDestructingSolverStorable11 [2022-07-13 22:45:44,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:44,854 INFO L85 PathProgramCache]: Analyzing trace with hash 66408255, now seen corresponding path program 1 times [2022-07-13 22:45:44,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:44,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67055699] [2022-07-13 22:45:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:44,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:45:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:45:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:45:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 22:45:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:45:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:45:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:45:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:45:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:45:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:45:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-13 22:45:45,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:45,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67055699] [2022-07-13 22:45:45,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67055699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:45,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:45:45,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:45:45,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909855550] [2022-07-13 22:45:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:45,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:45:45,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:45:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:45:45,116 INFO L87 Difference]: Start difference. First operand 164 states and 232 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) [2022-07-13 22:45:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:45,725 INFO L93 Difference]: Finished difference Result 331 states and 483 transitions. [2022-07-13 22:45:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:45:45,726 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 [2022-07-13 22:45:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:45,727 INFO L225 Difference]: With dead ends: 331 [2022-07-13 22:45:45,727 INFO L226 Difference]: Without dead ends: 203 [2022-07-13 22:45:45,728 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 [2022-07-13 22:45:45,728 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 150 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:45,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 583 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:45:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-13 22:45:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 175. [2022-07-13 22:45:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 113 states have internal predecessors, (127), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (70), 48 states have call predecessors, (70), 50 states have call successors, (70) [2022-07-13 22:45:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 248 transitions. [2022-07-13 22:45:45,743 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 248 transitions. Word has length 134 [2022-07-13 22:45:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:45,744 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 248 transitions. [2022-07-13 22:45:45,744 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) [2022-07-13 22:45:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 248 transitions. [2022-07-13 22:45:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 22:45:45,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:45,746 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] [2022-07-13 22:45:45,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:45:45,746 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1915413488, now seen corresponding path program 2 times [2022-07-13 22:45:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111334359] [2022-07-13 22:45:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:45:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:45:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:45:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:45:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:45:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:45:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:45:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:45:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:45:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:45:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:45:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:45:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-13 22:45:45,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:45,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111334359] [2022-07-13 22:45:45,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111334359] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:45,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939266649] [2022-07-13 22:45:45,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:45:45,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:45,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:45,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:45:46,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:45:46,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:45:46,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:45:46,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-13 22:45:46,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:45:46,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939266649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:45:46,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:45:46,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2022-07-13 22:45:46,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360980109] [2022-07-13 22:45:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:45:46,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:45:46,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:45:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:45:46,890 INFO L87 Difference]: Start difference. First operand 175 states and 248 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-07-13 22:45:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:47,012 INFO L93 Difference]: Finished difference Result 276 states and 389 transitions. [2022-07-13 22:45:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:45:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 [2022-07-13 22:45:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:47,014 INFO L225 Difference]: With dead ends: 276 [2022-07-13 22:45:47,014 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 22:45:47,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:45:47,015 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 10 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:47,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1237 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:45:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 22:45:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-13 22:45:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 113 states have internal predecessors, (127), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (68), 48 states have call predecessors, (68), 50 states have call successors, (68) [2022-07-13 22:45:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 246 transitions. [2022-07-13 22:45:47,031 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 246 transitions. Word has length 141 [2022-07-13 22:45:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:47,031 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 246 transitions. [2022-07-13 22:45:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-07-13 22:45:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 246 transitions. [2022-07-13 22:45:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 22:45:47,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:47,033 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] [2022-07-13 22:45:47,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:47,253 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 [2022-07-13 22:45:47,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2019042026, now seen corresponding path program 1 times [2022-07-13 22:45:47,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803139083] [2022-07-13 22:45:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:45:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:45:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:45:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:45:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:45:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:45:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:45:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:45:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:45:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:45:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:45:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:45:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:45:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:45:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:45:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:45:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:45:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-13 22:45:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803139083] [2022-07-13 22:45:47,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803139083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352971924] [2022-07-13 22:45:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:47,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:47,734 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:47,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:45:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:48,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-13 22:45:48,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:48,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:45:48,248 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:45:48,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-13 22:45:48,342 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:45:48,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:45:48,943 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:45:48,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-13 22:45:48,977 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 [2022-07-13 22:45:53,081 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 [2022-07-13 22:46:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 148 proven. 87 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 22:46:17,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:46:18,222 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1036 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1036) |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 [2022-07-13 22:46:18,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352971924] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:18,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:46:18,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 37 [2022-07-13 22:46:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988110687] [2022-07-13 22:46:18,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:46:18,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-13 22:46:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-13 22:46:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1664, Unknown=3, NotChecked=82, Total=1892 [2022-07-13 22:46:18,230 INFO L87 Difference]: Start difference. First operand 175 states and 246 transitions. Second operand has 37 states, 34 states have (on average 3.823529411764706) internal successors, (130), 34 states have internal predecessors, (130), 15 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (36), 12 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-13 22:46:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:24,934 INFO L93 Difference]: Finished difference Result 354 states and 496 transitions. [2022-07-13 22:46:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-13 22:46:24,937 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 3.823529411764706) internal successors, (130), 34 states have internal predecessors, (130), 15 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (36), 12 states have call predecessors, (36), 15 states have call successors, (36) Word has length 145 [2022-07-13 22:46:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:24,939 INFO L225 Difference]: With dead ends: 354 [2022-07-13 22:46:24,939 INFO L226 Difference]: Without dead ends: 240 [2022-07-13 22:46:24,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 211 SyntacticMatches, 25 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1483 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=331, Invalid=3829, Unknown=4, NotChecked=126, Total=4290 [2022-07-13 22:46:24,942 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 211 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1018 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:24,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1849 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1691 Invalid, 0 Unknown, 1018 Unchecked, 2.0s Time] [2022-07-13 22:46:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-13 22:46:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 187. [2022-07-13 22:46:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 125 states have (on average 1.16) internal successors, (145), 129 states have internal predecessors, (145), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (59), 43 states have call predecessors, (59), 44 states have call successors, (59) [2022-07-13 22:46:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 249 transitions. [2022-07-13 22:46:24,967 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 249 transitions. Word has length 145 [2022-07-13 22:46:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:24,969 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 249 transitions. [2022-07-13 22:46:24,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 3.823529411764706) internal successors, (130), 34 states have internal predecessors, (130), 15 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (36), 12 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-13 22:46:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 249 transitions. [2022-07-13 22:46:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 22:46:24,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:24,971 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 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] [2022-07-13 22:46:24,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-13 22:46:25,199 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 [2022-07-13 22:46:25,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1360565655, now seen corresponding path program 3 times [2022-07-13 22:46:25,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:25,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578109095] [2022-07-13 22:46:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:46:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:46:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:46:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:46:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:46:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:46:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:46:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:46:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:46:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 22:46:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-13 22:46:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:25,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578109095] [2022-07-13 22:46:25,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578109095] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:25,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134656339] [2022-07-13 22:46:25,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:46:25,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:25,632 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:25,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:46:26,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-13 22:46:26,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:46:26,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:46:26,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 22:46:26,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:26,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134656339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:26,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:46:26,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-13 22:46:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686264255] [2022-07-13 22:46:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:46:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:46:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:46:26,601 INFO L87 Difference]: Start difference. First operand 187 states and 249 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) [2022-07-13 22:46:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:26,751 INFO L93 Difference]: Finished difference Result 304 states and 407 transitions. [2022-07-13 22:46:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:46:26,752 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 143 [2022-07-13 22:46:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:26,753 INFO L225 Difference]: With dead ends: 304 [2022-07-13 22:46:26,753 INFO L226 Difference]: Without dead ends: 187 [2022-07-13 22:46:26,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:46:26,755 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 10 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:26,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1245 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:46:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-13 22:46:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-07-13 22:46:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 125 states have (on average 1.16) internal successors, (145), 129 states have internal predecessors, (145), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (58), 43 states have call predecessors, (58), 44 states have call successors, (58) [2022-07-13 22:46:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2022-07-13 22:46:26,769 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 143 [2022-07-13 22:46:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:26,770 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2022-07-13 22:46:26,770 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) [2022-07-13 22:46:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2022-07-13 22:46:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 22:46:26,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:26,772 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] [2022-07-13 22:46:26,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:26,985 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 [2022-07-13 22:46:26,986 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1785682142, now seen corresponding path program 4 times [2022-07-13 22:46:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:26,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176313155] [2022-07-13 22:46:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 22:46:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:46:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:46:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:46:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:46:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:46:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:46:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:46:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:46:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:46:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:46:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:46:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-13 22:46:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:27,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176313155] [2022-07-13 22:46:27,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176313155] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256512731] [2022-07-13 22:46:27,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:46:27,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:27,485 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:27,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:46:27,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:46:27,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:46:27,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-13 22:46:27,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:28,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:46:28,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:46:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 22:46:28,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:28,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256512731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:28,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:46:28,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 25 [2022-07-13 22:46:28,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009582042] [2022-07-13 22:46:28,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:28,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:46:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:46:28,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:46:28,992 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-13 22:46:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:29,356 INFO L93 Difference]: Finished difference Result 359 states and 461 transitions. [2022-07-13 22:46:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:46:29,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 145 [2022-07-13 22:46:29,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:29,357 INFO L225 Difference]: With dead ends: 359 [2022-07-13 22:46:29,357 INFO L226 Difference]: Without dead ends: 176 [2022-07-13 22:46:29,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 151 SyntacticMatches, 14 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2022-07-13 22:46:29,358 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 43 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:29,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1398 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 164 Unchecked, 0.3s Time] [2022-07-13 22:46:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-13 22:46:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-07-13 22:46:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 119 states have (on average 1.1596638655462186) internal successors, (138), 123 states have internal predecessors, (138), 40 states have call successors, (40), 14 states have call predecessors, (40), 16 states have return successors, (53), 38 states have call predecessors, (53), 39 states have call successors, (53) [2022-07-13 22:46:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 231 transitions. [2022-07-13 22:46:29,368 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 231 transitions. Word has length 145 [2022-07-13 22:46:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:29,368 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 231 transitions. [2022-07-13 22:46:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-13 22:46:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 231 transitions. [2022-07-13 22:46:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 22:46:29,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:29,369 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] [2022-07-13 22:46:29,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:29,587 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 [2022-07-13 22:46:29,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -486474168, now seen corresponding path program 2 times [2022-07-13 22:46:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:29,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616809819] [2022-07-13 22:46:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:46:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:46:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:46:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:46:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 22:46:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-13 22:46:29,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616809819] [2022-07-13 22:46:29,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616809819] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974817544] [2022-07-13 22:46:29,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:46:29,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:29,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:29,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:29,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:46:30,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:46:30,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:46:30,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-13 22:46:30,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:30,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:46:30,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:46:30,609 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 22:46:30,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-13 22:46:30,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-13 22:46:30,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:46:30,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:46:30,813 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 [2022-07-13 22:46:31,333 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:46:31,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-13 22:46:31,409 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 28 treesize of output 28 [2022-07-13 22:46:31,694 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 28 treesize of output 28 [2022-07-13 22:46:33,246 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-07-13 22:46:33,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-07-13 22:46:33,800 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-13 22:46:33,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-13 22:46:33,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-13 22:46:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 185 proven. 54 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-13 22:46:42,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:46:42,823 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1306 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1306) |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 [2022-07-13 22:46:42,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974817544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:42,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:46:42,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31] total 41 [2022-07-13 22:46:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968623013] [2022-07-13 22:46:42,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:46:42,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-13 22:46:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-13 22:46:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2452, Unknown=5, NotChecked=100, Total=2756 [2022-07-13 22:46:42,880 INFO L87 Difference]: Start difference. First operand 176 states and 231 transitions. Second operand has 41 states, 39 states have (on average 3.41025641025641) internal successors, (133), 36 states have internal predecessors, (133), 13 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2022-07-13 22:46:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:48,983 INFO L93 Difference]: Finished difference Result 414 states and 556 transitions. [2022-07-13 22:46:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-13 22:46:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 3.41025641025641) internal successors, (133), 36 states have internal predecessors, (133), 13 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) Word has length 157 [2022-07-13 22:46:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:48,985 INFO L225 Difference]: With dead ends: 414 [2022-07-13 22:46:48,985 INFO L226 Difference]: Without dead ends: 271 [2022-07-13 22:46:48,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 159 SyntacticMatches, 25 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2649 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=916, Invalid=8982, Unknown=6, NotChecked=196, Total=10100 [2022-07-13 22:46:48,988 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 154 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1710 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:48,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 2157 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1579 Invalid, 0 Unknown, 1710 Unchecked, 1.6s Time] [2022-07-13 22:46:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-13 22:46:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2022-07-13 22:46:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 156 states have internal predecessors, (174), 54 states have call successors, (54), 19 states have call predecessors, (54), 20 states have return successors, (73), 52 states have call predecessors, (73), 53 states have call successors, (73) [2022-07-13 22:46:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 301 transitions. [2022-07-13 22:46:49,002 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 301 transitions. Word has length 157 [2022-07-13 22:46:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:49,003 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 301 transitions. [2022-07-13 22:46:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 3.41025641025641) internal successors, (133), 36 states have internal predecessors, (133), 13 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2022-07-13 22:46:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 301 transitions. [2022-07-13 22:46:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:46:49,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:49,004 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] [2022-07-13 22:46:49,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:49,225 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 [2022-07-13 22:46:49,225 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1405361235, now seen corresponding path program 1 times [2022-07-13 22:46:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:49,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239589159] [2022-07-13 22:46:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:49,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:46:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:46:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 22:46:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:46:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:46:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 22:46:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 22:46:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-13 22:46:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:49,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239589159] [2022-07-13 22:46:49,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239589159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:49,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114068113] [2022-07-13 22:46:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:49,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:49,697 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:49,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:46:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 22:46:50,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:50,305 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 [2022-07-13 22:46:51,065 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 [2022-07-13 22:46:51,067 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 [2022-07-13 22:46:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-13 22:46:51,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:51,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114068113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:51,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:46:51,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 31 [2022-07-13 22:46:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978912384] [2022-07-13 22:46:51,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:51,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:46:51,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:46:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:46:51,114 INFO L87 Difference]: Start difference. First operand 228 states and 301 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) [2022-07-13 22:46:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:51,347 INFO L93 Difference]: Finished difference Result 329 states and 436 transitions. [2022-07-13 22:46:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:46:51,347 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 [2022-07-13 22:46:51,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:51,349 INFO L225 Difference]: With dead ends: 329 [2022-07-13 22:46:51,349 INFO L226 Difference]: Without dead ends: 209 [2022-07-13 22:46:51,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 22:46:51,350 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 46 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:51,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 817 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-07-13 22:46:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-07-13 22:46:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2022-07-13 22:46:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 136 states have (on average 1.125) internal successors, (153), 140 states have internal predecessors, (153), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (53), 38 states have call predecessors, (53), 39 states have call successors, (53) [2022-07-13 22:46:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2022-07-13 22:46:51,366 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 156 [2022-07-13 22:46:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:51,366 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2022-07-13 22:46:51,367 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) [2022-07-13 22:46:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2022-07-13 22:46:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:46:51,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:51,368 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-13 22:46:51,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:51,595 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 [2022-07-13 22:46:51,595 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 975424030, now seen corresponding path program 1 times [2022-07-13 22:46:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:51,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455181778] [2022-07-13 22:46:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-13 22:46:51,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:51,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455181778] [2022-07-13 22:46:51,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455181778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:51,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:51,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:46:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949056897] [2022-07-13 22:46:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:51,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:46:51,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:51,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:46:51,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:46:51,915 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 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) [2022-07-13 22:46:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:52,910 INFO L93 Difference]: Finished difference Result 204 states and 254 transitions. [2022-07-13 22:46:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:46:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 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 165 [2022-07-13 22:46:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:52,912 INFO L225 Difference]: With dead ends: 204 [2022-07-13 22:46:52,912 INFO L226 Difference]: Without dead ends: 202 [2022-07-13 22:46:52,912 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 [2022-07-13 22:46:52,912 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 69 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:52,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1251 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 22:46:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-13 22:46:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-07-13 22:46:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 136 states have internal predecessors, (150), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (46), 38 states have call predecessors, (46), 39 states have call successors, (46) [2022-07-13 22:46:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 236 transitions. [2022-07-13 22:46:52,941 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 236 transitions. Word has length 165 [2022-07-13 22:46:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:52,941 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 236 transitions. [2022-07-13 22:46:52,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 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) [2022-07-13 22:46:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 236 transitions. [2022-07-13 22:46:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 22:46:52,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:52,942 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] [2022-07-13 22:46:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:46:52,943 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1362491991, now seen corresponding path program 1 times [2022-07-13 22:46:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:52,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442607096] [2022-07-13 22:46:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:46:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:46:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442607096] [2022-07-13 22:46:53,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442607096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:53,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:53,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:46:53,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315468240] [2022-07-13 22:46:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:46:53,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:46:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:46:53,131 INFO L87 Difference]: Start difference. First operand 192 states and 236 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-07-13 22:46:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:53,322 INFO L93 Difference]: Finished difference Result 286 states and 362 transitions. [2022-07-13 22:46:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:46:53,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 166 [2022-07-13 22:46:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:53,323 INFO L225 Difference]: With dead ends: 286 [2022-07-13 22:46:53,324 INFO L226 Difference]: Without dead ends: 193 [2022-07-13 22:46:53,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:46:53,324 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 36 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:53,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 308 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:46:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-13 22:46:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-07-13 22:46:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 134 states have (on average 1.126865671641791) internal successors, (151), 137 states have internal predecessors, (151), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (46), 38 states have call predecessors, (46), 39 states have call successors, (46) [2022-07-13 22:46:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2022-07-13 22:46:53,336 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 166 [2022-07-13 22:46:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:53,336 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2022-07-13 22:46:53,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-07-13 22:46:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2022-07-13 22:46:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 22:46:53,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:53,337 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] [2022-07-13 22:46:53,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:46:53,338 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:53,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash 939790165, now seen corresponding path program 1 times [2022-07-13 22:46:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:53,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425949750] [2022-07-13 22:46:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:53,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:46:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-13 22:46:53,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:53,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425949750] [2022-07-13 22:46:53,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425949750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:53,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:53,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 22:46:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599631123] [2022-07-13 22:46:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:46:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:46:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:46:53,952 INFO L87 Difference]: Start difference. First operand 193 states and 237 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) [2022-07-13 22:46:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:55,542 INFO L93 Difference]: Finished difference Result 320 states and 432 transitions. [2022-07-13 22:46:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:46:55,543 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 [2022-07-13 22:46:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:55,545 INFO L225 Difference]: With dead ends: 320 [2022-07-13 22:46:55,545 INFO L226 Difference]: Without dead ends: 234 [2022-07-13 22:46:55,545 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 [2022-07-13 22:46:55,546 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 206 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:55,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 864 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 22:46:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-13 22:46:55,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 199. [2022-07-13 22:46:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 143 states have internal predecessors, (155), 41 states have call successors, (41), 17 states have call predecessors, (41), 19 states have return successors, (54), 38 states have call predecessors, (54), 40 states have call successors, (54) [2022-07-13 22:46:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2022-07-13 22:46:55,560 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 166 [2022-07-13 22:46:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:55,560 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2022-07-13 22:46:55,560 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) [2022-07-13 22:46:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2022-07-13 22:46:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 22:46:55,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:55,561 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] [2022-07-13 22:46:55,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:46:55,562 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:55,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash -811645806, now seen corresponding path program 1 times [2022-07-13 22:46:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:55,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560721934] [2022-07-13 22:46:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:46:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:46:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560721934] [2022-07-13 22:46:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560721934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:55,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:55,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:46:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573858660] [2022-07-13 22:46:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:46:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:46:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:46:55,775 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 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) [2022-07-13 22:46:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:56,266 INFO L93 Difference]: Finished difference Result 329 states and 447 transitions. [2022-07-13 22:46:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:46:56,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 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 167 [2022-07-13 22:46:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:56,268 INFO L225 Difference]: With dead ends: 329 [2022-07-13 22:46:56,268 INFO L226 Difference]: Without dead ends: 237 [2022-07-13 22:46:56,269 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 [2022-07-13 22:46:56,269 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 80 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 623 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 [2022-07-13 22:46:56,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 623 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:46:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-13 22:46:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2022-07-13 22:46:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.108695652173913) internal successors, (153), 143 states have internal predecessors, (153), 41 states have call successors, (41), 17 states have call predecessors, (41), 19 states have return successors, (54), 38 states have call predecessors, (54), 40 states have call successors, (54) [2022-07-13 22:46:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 248 transitions. [2022-07-13 22:46:56,284 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 248 transitions. Word has length 167 [2022-07-13 22:46:56,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:56,284 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 248 transitions. [2022-07-13 22:46:56,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 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) [2022-07-13 22:46:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 248 transitions. [2022-07-13 22:46:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-13 22:46:56,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:56,285 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] [2022-07-13 22:46:56,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:46:56,286 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1110832236, now seen corresponding path program 1 times [2022-07-13 22:46:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:56,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577152325] [2022-07-13 22:46:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:56,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:46:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:46:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-13 22:46:56,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:56,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577152325] [2022-07-13 22:46:56,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577152325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:56,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:56,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:46:56,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402701907] [2022-07-13 22:46:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:46:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:46:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:46:56,476 INFO L87 Difference]: Start difference. First operand 199 states and 248 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-13 22:46:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:56,959 INFO L93 Difference]: Finished difference Result 281 states and 355 transitions. [2022-07-13 22:46:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:46:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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 171 [2022-07-13 22:46:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:56,961 INFO L225 Difference]: With dead ends: 281 [2022-07-13 22:46:56,961 INFO L226 Difference]: Without dead ends: 196 [2022-07-13 22:46:56,961 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 [2022-07-13 22:46:56,962 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 58 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:56,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 459 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:46:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-13 22:46:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-07-13 22:46:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 136 states have (on average 1.1029411764705883) internal successors, (150), 140 states have internal predecessors, (150), 41 states have call successors, (41), 17 states have call predecessors, (41), 18 states have return successors, (53), 38 states have call predecessors, (53), 40 states have call successors, (53) [2022-07-13 22:46:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 244 transitions. [2022-07-13 22:46:56,976 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 244 transitions. Word has length 171 [2022-07-13 22:46:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:56,976 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 244 transitions. [2022-07-13 22:46:56,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 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) [2022-07-13 22:46:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 244 transitions. [2022-07-13 22:46:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:46:56,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:56,981 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] [2022-07-13 22:46:56,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:46:56,981 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2076699861, now seen corresponding path program 1 times [2022-07-13 22:46:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:56,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958762758] [2022-07-13 22:46:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:56,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:46:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:46:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:57,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958762758] [2022-07-13 22:46:57,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958762758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:57,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:57,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:46:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793805188] [2022-07-13 22:46:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:57,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:46:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:57,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:46:57,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:46:57,370 INFO L87 Difference]: Start difference. First operand 196 states and 244 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) [2022-07-13 22:46:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:57,907 INFO L93 Difference]: Finished difference Result 301 states and 393 transitions. [2022-07-13 22:46:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:46:57,908 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 [2022-07-13 22:46:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:57,909 INFO L225 Difference]: With dead ends: 301 [2022-07-13 22:46:57,909 INFO L226 Difference]: Without dead ends: 209 [2022-07-13 22:46:57,910 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 [2022-07-13 22:46:57,910 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 118 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:57,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 519 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:46:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-07-13 22:46:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2022-07-13 22:46:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 132 states have (on average 1.0984848484848484) internal successors, (145), 135 states have internal predecessors, (145), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (49), 37 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-13 22:46:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2022-07-13 22:46:57,936 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 169 [2022-07-13 22:46:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:57,936 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2022-07-13 22:46:57,937 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) [2022-07-13 22:46:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2022-07-13 22:46:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 22:46:57,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:57,938 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] [2022-07-13 22:46:57,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:46:57,938 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1662356433, now seen corresponding path program 1 times [2022-07-13 22:46:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:57,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071654379] [2022-07-13 22:46:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:46:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:46:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-07-13 22:46:58,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:58,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071654379] [2022-07-13 22:46:58,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071654379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:58,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:58,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:46:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843259657] [2022-07-13 22:46:58,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:46:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:58,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:46:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:46:58,235 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-07-13 22:46:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:58,726 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2022-07-13 22:46:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:46:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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 173 [2022-07-13 22:46:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:58,727 INFO L225 Difference]: With dead ends: 198 [2022-07-13 22:46:58,727 INFO L226 Difference]: Without dead ends: 196 [2022-07-13 22:46:58,727 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 [2022-07-13 22:46:58,728 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 50 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:58,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 749 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:46:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-13 22:46:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2022-07-13 22:46:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 135 states have (on average 1.0962962962962963) internal successors, (148), 138 states have internal predecessors, (148), 40 states have call successors, (40), 18 states have call predecessors, (40), 19 states have return successors, (50), 38 states have call predecessors, (50), 39 states have call successors, (50) [2022-07-13 22:46:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 238 transitions. [2022-07-13 22:46:58,741 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 238 transitions. Word has length 173 [2022-07-13 22:46:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:58,742 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 238 transitions. [2022-07-13 22:46:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-07-13 22:46:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 238 transitions. [2022-07-13 22:46:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-13 22:46:58,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:58,743 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] [2022-07-13 22:46:58,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:46:58,743 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1087667353, now seen corresponding path program 1 times [2022-07-13 22:46:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:58,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471440194] [2022-07-13 22:46:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:46:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:46:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-13 22:46:58,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471440194] [2022-07-13 22:46:58,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471440194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:58,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:58,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:46:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923014962] [2022-07-13 22:46:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:58,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:46:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:46:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:46:58,949 INFO L87 Difference]: Start difference. First operand 195 states and 238 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-07-13 22:46:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:59,596 INFO L93 Difference]: Finished difference Result 279 states and 352 transitions. [2022-07-13 22:46:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:46:59,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 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 177 [2022-07-13 22:46:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:59,597 INFO L225 Difference]: With dead ends: 279 [2022-07-13 22:46:59,597 INFO L226 Difference]: Without dead ends: 200 [2022-07-13 22:46:59,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:46:59,598 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 54 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:59,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 537 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:46:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-13 22:46:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2022-07-13 22:46:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 136 states have (on average 1.0955882352941178) internal successors, (149), 139 states have internal predecessors, (149), 42 states have call successors, (42), 18 states have call predecessors, (42), 19 states have return successors, (52), 40 states have call predecessors, (52), 41 states have call successors, (52) [2022-07-13 22:46:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 243 transitions. [2022-07-13 22:46:59,612 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 243 transitions. Word has length 177 [2022-07-13 22:46:59,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:59,612 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 243 transitions. [2022-07-13 22:46:59,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 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) [2022-07-13 22:46:59,612 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 243 transitions. [2022-07-13 22:46:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 22:46:59,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:59,614 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] [2022-07-13 22:46:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:46:59,615 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2119653097, now seen corresponding path program 1 times [2022-07-13 22:46:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:59,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531184317] [2022-07-13 22:46:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:46:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:46:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:46:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:46:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:46:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:46:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:46:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:46:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:46:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:46:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:46:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:46:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-13 22:47:00,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:00,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531184317] [2022-07-13 22:47:00,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531184317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:00,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:00,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 22:47:00,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540440187] [2022-07-13 22:47:00,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:00,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:47:00,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:00,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:47:00,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:47:00,044 INFO L87 Difference]: Start difference. First operand 198 states and 243 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 8 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-13 22:47:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:01,098 INFO L93 Difference]: Finished difference Result 278 states and 348 transitions. [2022-07-13 22:47:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:47:01,098 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 8 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 180 [2022-07-13 22:47:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:01,099 INFO L225 Difference]: With dead ends: 278 [2022-07-13 22:47:01,099 INFO L226 Difference]: Without dead ends: 199 [2022-07-13 22:47:01,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-07-13 22:47:01,100 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 158 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:01,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 768 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 22:47:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-13 22:47:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 194. [2022-07-13 22:47:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 135 states have (on average 1.0962962962962963) internal successors, (148), 138 states have internal predecessors, (148), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (47), 37 states have call predecessors, (47), 38 states have call successors, (47) [2022-07-13 22:47:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2022-07-13 22:47:01,117 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 180 [2022-07-13 22:47:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:01,117 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2022-07-13 22:47:01,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 8 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-13 22:47:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2022-07-13 22:47:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 22:47:01,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:01,119 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] [2022-07-13 22:47:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:47:01,119 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2093207343, now seen corresponding path program 1 times [2022-07-13 22:47:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:01,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712454609] [2022-07-13 22:47:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:01,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:47:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:47:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:47:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:47:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 22:47:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-13 22:47:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:01,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712454609] [2022-07-13 22:47:01,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712454609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:01,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:01,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:47:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616636110] [2022-07-13 22:47:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:01,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:47:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:47:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:47:01,366 INFO L87 Difference]: Start difference. First operand 194 states and 234 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, (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) [2022-07-13 22:47:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:01,956 INFO L93 Difference]: Finished difference Result 202 states and 242 transitions. [2022-07-13 22:47:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:47:01,956 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, (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 189 [2022-07-13 22:47:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:01,957 INFO L225 Difference]: With dead ends: 202 [2022-07-13 22:47:01,958 INFO L226 Difference]: Without dead ends: 200 [2022-07-13 22:47:01,958 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 [2022-07-13 22:47:01,958 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 50 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:01,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 749 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:47:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-13 22:47:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2022-07-13 22:47:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.0942028985507246) internal successors, (151), 141 states have internal predecessors, (151), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (48), 38 states have call predecessors, (48), 39 states have call successors, (48) [2022-07-13 22:47:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 239 transitions. [2022-07-13 22:47:01,988 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 239 transitions. Word has length 189 [2022-07-13 22:47:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:01,988 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 239 transitions. [2022-07-13 22:47:01,988 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, (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) [2022-07-13 22:47:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 239 transitions. [2022-07-13 22:47:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-13 22:47:01,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:01,989 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] [2022-07-13 22:47:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:47:01,989 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash 571203993, now seen corresponding path program 1 times [2022-07-13 22:47:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:01,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594144201] [2022-07-13 22:47:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:47:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:47:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:47:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:47:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 22:47:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 22:47:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594144201] [2022-07-13 22:47:02,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594144201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:02,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565862161] [2022-07-13 22:47:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:02,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:02,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:02,392 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:02,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:47:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-13 22:47:02,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:02,997 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 [2022-07-13 22:47:03,277 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:47:03,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-13 22:47:03,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-13 22:47:03,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:47:03,338 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-13 22:47:03,339 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 29 [2022-07-13 22:47:03,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:47:04,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:47:04,226 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:47:04,226 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 24 treesize of output 30 [2022-07-13 22:47:04,236 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:47:04,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-07-13 22:47:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 112 proven. 240 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-13 22:47:05,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:47:07,828 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 32 treesize of output 28 [2022-07-13 22:47:07,854 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_ArrVal_2239 (Array Int Int)) (v_ArrVal_2237 (Array Int Int)) (v_arrayElimCell_37 Int)) (let ((.cse0 (+ |c_aws_byte_cursor_read_~cur#1.offset| 8))) (or (and (= |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.offset| |c_aws_byte_cursor_read_~cur#1.offset|) (= |c_aws_byte_cursor_read_~cur#1.base| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base|)) (not (= 0 (select (select (store |c_#memory_$Pointer$.offset| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2237) |c_aws_byte_cursor_read_~cur#1.base|) .cse0))) (not (= (select (select (store |c_#memory_$Pointer$.base| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2239) |c_aws_byte_cursor_read_~cur#1.base|) .cse0) 0)) (= (mod v_arrayElimCell_37 18446744073709551616) 0)))) is different from false [2022-07-13 22:47:07,874 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_ArrVal_2239 (Array Int Int)) (v_ArrVal_2237 (Array Int Int))) (let ((.cse0 (+ |c_aws_byte_cursor_read_~cur#1.offset| 8))) (or (and (= |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.offset| |c_aws_byte_cursor_read_~cur#1.offset|) (= |c_aws_byte_cursor_read_~cur#1.base| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base|)) (not (= 0 (select (select (store |c_#memory_$Pointer$.offset| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2237) |c_aws_byte_cursor_read_~cur#1.base|) .cse0))) (not (= (select (select (store |c_#memory_$Pointer$.base| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2239) |c_aws_byte_cursor_read_~cur#1.base|) .cse0) 0))))) is different from false [2022-07-13 22:47:07,895 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_ArrVal_2239 (Array Int Int)) (v_ArrVal_2237 (Array Int Int))) (let ((.cse0 (+ |c_aws_byte_cursor_read_~cur#1.offset| 8))) (or (and (= |c_aws_byte_cursor_read_~cur#1.base| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base|) (= |c_aws_byte_cursor_read_~cur#1.offset| 0)) (not (= 0 (select (select (store |c_#memory_$Pointer$.offset| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2237) |c_aws_byte_cursor_read_~cur#1.base|) .cse0))) (not (= (select (select (store |c_#memory_$Pointer$.base| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2239) |c_aws_byte_cursor_read_~cur#1.base|) .cse0) 0))))) is different from false [2022-07-13 22:47:07,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565862161] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:07,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:47:07,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 33] total 40 [2022-07-13 22:47:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529315598] [2022-07-13 22:47:07,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:47:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 22:47:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 22:47:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2340, Unknown=4, NotChecked=300, Total=2862 [2022-07-13 22:47:07,931 INFO L87 Difference]: Start difference. First operand 199 states and 239 transitions. Second operand has 40 states, 39 states have (on average 3.8461538461538463) internal successors, (150), 37 states have internal predecessors, (150), 13 states have call successors, (46), 7 states have call predecessors, (46), 9 states have return successors, (43), 13 states have call predecessors, (43), 12 states have call successors, (43) [2022-07-13 22:47:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:11,979 INFO L93 Difference]: Finished difference Result 363 states and 454 transitions. [2022-07-13 22:47:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-13 22:47:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.8461538461538463) internal successors, (150), 37 states have internal predecessors, (150), 13 states have call successors, (46), 7 states have call predecessors, (46), 9 states have return successors, (43), 13 states have call predecessors, (43), 12 states have call successors, (43) Word has length 193 [2022-07-13 22:47:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:11,981 INFO L225 Difference]: With dead ends: 363 [2022-07-13 22:47:11,981 INFO L226 Difference]: Without dead ends: 296 [2022-07-13 22:47:11,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 229 SyntacticMatches, 25 SemanticMatches, 94 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2941 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=685, Invalid=7879, Unknown=4, NotChecked=552, Total=9120 [2022-07-13 22:47:11,984 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 128 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 589 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:11,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 2254 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2468 Invalid, 0 Unknown, 589 Unchecked, 2.3s Time] [2022-07-13 22:47:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-13 22:47:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 228. [2022-07-13 22:47:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 160 states have (on average 1.0875) internal successors, (174), 163 states have internal predecessors, (174), 44 states have call successors, (44), 22 states have call predecessors, (44), 23 states have return successors, (52), 42 states have call predecessors, (52), 43 states have call successors, (52) [2022-07-13 22:47:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2022-07-13 22:47:12,002 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 193 [2022-07-13 22:47:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:12,002 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2022-07-13 22:47:12,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.8461538461538463) internal successors, (150), 37 states have internal predecessors, (150), 13 states have call successors, (46), 7 states have call predecessors, (46), 9 states have return successors, (43), 13 states have call predecessors, (43), 12 states have call successors, (43) [2022-07-13 22:47:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2022-07-13 22:47:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 22:47:12,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:12,004 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:12,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:12,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:12,219 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1929636640, now seen corresponding path program 2 times [2022-07-13 22:47:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:12,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515998062] [2022-07-13 22:47:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:47:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:47:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:47:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:47:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 22:47:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-13 22:47:12,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:12,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515998062] [2022-07-13 22:47:12,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515998062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:12,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:12,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:47:12,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931047805] [2022-07-13 22:47:12,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:12,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:47:12,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:47:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:47:12,547 INFO L87 Difference]: Start difference. First operand 228 states and 270 transitions. Second operand has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 11 states have internal predecessors, (61), 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) [2022-07-13 22:47:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:13,597 INFO L93 Difference]: Finished difference Result 234 states and 275 transitions. [2022-07-13 22:47:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:47:13,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 11 states have internal predecessors, (61), 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 195 [2022-07-13 22:47:13,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:13,599 INFO L225 Difference]: With dead ends: 234 [2022-07-13 22:47:13,599 INFO L226 Difference]: Without dead ends: 232 [2022-07-13 22:47:13,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:47:13,600 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 65 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:13,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1172 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 22:47:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-13 22:47:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2022-07-13 22:47:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 160 states have (on average 1.0875) internal successors, (174), 163 states have internal predecessors, (174), 43 states have call successors, (43), 22 states have call predecessors, (43), 23 states have return successors, (51), 41 states have call predecessors, (51), 42 states have call successors, (51) [2022-07-13 22:47:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 268 transitions. [2022-07-13 22:47:13,617 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 268 transitions. Word has length 195 [2022-07-13 22:47:13,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:13,617 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 268 transitions. [2022-07-13 22:47:13,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 11 states have internal predecessors, (61), 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) [2022-07-13 22:47:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 268 transitions. [2022-07-13 22:47:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-13 22:47:13,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:13,619 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] [2022-07-13 22:47:13,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 22:47:13,619 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1519475418, now seen corresponding path program 1 times [2022-07-13 22:47:13,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:13,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120246255] [2022-07-13 22:47:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:13,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:47:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 22:47:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 22:47:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:47:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 22:47:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-13 22:47:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2022-07-13 22:47:13,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:13,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120246255] [2022-07-13 22:47:13,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120246255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:13,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:13,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:47:13,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710765486] [2022-07-13 22:47:13,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:13,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:47:13,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:47:13,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:47:13,859 INFO L87 Difference]: Start difference. First operand 227 states and 268 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-13 22:47:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:14,457 INFO L93 Difference]: Finished difference Result 307 states and 370 transitions. [2022-07-13 22:47:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:47:14,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 196 [2022-07-13 22:47:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:14,459 INFO L225 Difference]: With dead ends: 307 [2022-07-13 22:47:14,459 INFO L226 Difference]: Without dead ends: 235 [2022-07-13 22:47:14,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:47:14,460 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 81 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:14,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 425 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:47:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-13 22:47:14,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2022-07-13 22:47:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 160 states have (on average 1.08125) internal successors, (173), 163 states have internal predecessors, (173), 43 states have call successors, (43), 22 states have call predecessors, (43), 23 states have return successors, (51), 41 states have call predecessors, (51), 42 states have call successors, (51) [2022-07-13 22:47:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2022-07-13 22:47:14,482 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 196 [2022-07-13 22:47:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:14,482 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2022-07-13 22:47:14,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-13 22:47:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2022-07-13 22:47:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 22:47:14,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:14,483 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] [2022-07-13 22:47:14,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 22:47:14,484 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1941778844, now seen corresponding path program 1 times [2022-07-13 22:47:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:14,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649069526] [2022-07-13 22:47:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:47:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:47:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:47:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-13 22:47:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 22:47:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-13 22:47:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-13 22:47:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:14,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649069526] [2022-07-13 22:47:14,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649069526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:14,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:14,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:47:14,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869530224] [2022-07-13 22:47:14,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:14,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:47:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:47:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:47:14,741 INFO L87 Difference]: Start difference. First operand 227 states and 267 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) [2022-07-13 22:47:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:15,565 INFO L93 Difference]: Finished difference Result 239 states and 281 transitions. [2022-07-13 22:47:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:47:15,565 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 [2022-07-13 22:47:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:15,566 INFO L225 Difference]: With dead ends: 239 [2022-07-13 22:47:15,566 INFO L226 Difference]: Without dead ends: 237 [2022-07-13 22:47:15,567 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 [2022-07-13 22:47:15,567 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 94 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:15,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 693 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 22:47:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-13 22:47:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2022-07-13 22:47:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 163 states have (on average 1.0797546012269938) internal successors, (176), 166 states have internal predecessors, (176), 44 states have call successors, (44), 23 states have call predecessors, (44), 24 states have return successors, (52), 42 states have call predecessors, (52), 43 states have call successors, (52) [2022-07-13 22:47:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 272 transitions. [2022-07-13 22:47:15,584 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 272 transitions. Word has length 199 [2022-07-13 22:47:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:15,585 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 272 transitions. [2022-07-13 22:47:15,585 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) [2022-07-13 22:47:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 272 transitions. [2022-07-13 22:47:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-13 22:47:15,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:15,587 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] [2022-07-13 22:47:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 22:47:15,587 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash -574364444, now seen corresponding path program 1 times [2022-07-13 22:47:15,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:15,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912389744] [2022-07-13 22:47:15,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:47:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:47:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:47:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-13 22:47:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 22:47:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-13 22:47:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-13 22:47:15,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:15,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912389744] [2022-07-13 22:47:15,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912389744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:15,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:15,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:47:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720128865] [2022-07-13 22:47:15,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:15,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:47:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:47:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:47:15,910 INFO L87 Difference]: Start difference. First operand 232 states and 272 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) [2022-07-13 22:47:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:16,604 INFO L93 Difference]: Finished difference Result 310 states and 370 transitions. [2022-07-13 22:47:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:47:16,605 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 [2022-07-13 22:47:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:16,606 INFO L225 Difference]: With dead ends: 310 [2022-07-13 22:47:16,606 INFO L226 Difference]: Without dead ends: 233 [2022-07-13 22:47:16,606 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 [2022-07-13 22:47:16,607 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 110 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:16,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 487 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:47:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-13 22:47:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-07-13 22:47:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 164 states have (on average 1.079268292682927) internal successors, (177), 167 states have internal predecessors, (177), 44 states have call successors, (44), 23 states have call predecessors, (44), 24 states have return successors, (52), 42 states have call predecessors, (52), 43 states have call successors, (52) [2022-07-13 22:47:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2022-07-13 22:47:16,624 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 203 [2022-07-13 22:47:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:16,624 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2022-07-13 22:47:16,624 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) [2022-07-13 22:47:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2022-07-13 22:47:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-13 22:47:16,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:16,626 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] [2022-07-13 22:47:16,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 22:47:16,626 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1436566363, now seen corresponding path program 1 times [2022-07-13 22:47:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:16,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108474973] [2022-07-13 22:47:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:16,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:47:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:47:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:47:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-13 22:47:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 22:47:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-13 22:47:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-13 22:47:17,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108474973] [2022-07-13 22:47:17,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108474973] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213567795] [2022-07-13 22:47:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:17,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:17,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:17,070 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:17,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 22:47:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:17,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:47:17,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-13 22:47:17,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:47:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-13 22:47:17,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213567795] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:17,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:47:17,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 10 [2022-07-13 22:47:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152299564] [2022-07-13 22:47:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:47:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:47:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:47:17,772 INFO L87 Difference]: Start difference. First operand 233 states and 273 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) [2022-07-13 22:47:17,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:17,872 INFO L93 Difference]: Finished difference Result 307 states and 365 transitions. [2022-07-13 22:47:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:47:17,872 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 [2022-07-13 22:47:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:17,873 INFO L225 Difference]: With dead ends: 307 [2022-07-13 22:47:17,874 INFO L226 Difference]: Without dead ends: 234 [2022-07-13 22:47:17,874 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 [2022-07-13 22:47:17,874 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 4 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:17,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 314 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:47:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-13 22:47:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-13 22:47:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 165 states have (on average 1.0787878787878789) internal successors, (178), 168 states have internal predecessors, (178), 44 states have call successors, (44), 23 states have call predecessors, (44), 24 states have return successors, (52), 42 states have call predecessors, (52), 43 states have call successors, (52) [2022-07-13 22:47:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 274 transitions. [2022-07-13 22:47:17,905 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 274 transitions. Word has length 204 [2022-07-13 22:47:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:17,906 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 274 transitions. [2022-07-13 22:47:17,906 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) [2022-07-13 22:47:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 274 transitions. [2022-07-13 22:47:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-13 22:47:17,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:17,910 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] [2022-07-13 22:47:17,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:18,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:18,123 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -757899545, now seen corresponding path program 1 times [2022-07-13 22:47:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941325004] [2022-07-13 22:47:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:18,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:47:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:47:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 22:47:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:47:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:47:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:47:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:47:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:47:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 22:47:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-13 22:47:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-13 22:47:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:18,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941325004] [2022-07-13 22:47:18,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941325004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:18,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:18,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:47:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357214705] [2022-07-13 22:47:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:18,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:47:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:47:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:47:18,408 INFO L87 Difference]: Start difference. First operand 234 states and 274 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-13 22:47:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:18,968 INFO L93 Difference]: Finished difference Result 242 states and 282 transitions. [2022-07-13 22:47:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:47:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 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 206 [2022-07-13 22:47:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:18,970 INFO L225 Difference]: With dead ends: 242 [2022-07-13 22:47:18,970 INFO L226 Difference]: Without dead ends: 240 [2022-07-13 22:47:18,970 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 [2022-07-13 22:47:18,970 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 81 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:18,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 730 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:47:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-13 22:47:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2022-07-13 22:47:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 168 states have (on average 1.0773809523809523) internal successors, (181), 171 states have internal predecessors, (181), 45 states have call successors, (45), 24 states have call predecessors, (45), 25 states have return successors, (53), 43 states have call predecessors, (53), 44 states have call successors, (53) [2022-07-13 22:47:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 279 transitions. [2022-07-13 22:47:19,014 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 279 transitions. Word has length 206 [2022-07-13 22:47:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:19,014 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 279 transitions. [2022-07-13 22:47:19,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-07-13 22:47:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 279 transitions. [2022-07-13 22:47:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-13 22:47:19,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:19,016 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] [2022-07-13 22:47:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 22:47:19,016 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1330763706, now seen corresponding path program 1 times [2022-07-13 22:47:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093965477] [2022-07-13 22:47:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:47:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 22:47:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:47:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:47:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 22:47:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 22:47:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:47:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:47:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:47:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:47:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:47:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:47:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:47:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 22:47:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-13 22:47:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 22:47:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 22:47:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-13 22:47:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093965477] [2022-07-13 22:47:19,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093965477] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239945476] [2022-07-13 22:47:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:19,802 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) [2022-07-13 22:47:19,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 22:47:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:20,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3237 conjuncts, 115 conjunts are in the unsatisfiable core [2022-07-13 22:47:20,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:20,724 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 21 treesize of output 13