./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_satisfies_pred_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 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:40:03,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:40:03,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:40:03,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:40:03,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:40:03,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:40:03,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:40:03,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:40:03,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:40:03,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:40:03,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:40:03,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:40:03,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:40:03,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:40:03,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:40:03,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:40:03,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:40:03,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:40:03,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:40:03,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:40:03,101 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:40:03,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:40:03,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:40:03,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:40:03,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:40:03,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:40:03,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:40:03,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:40:03,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:40:03,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:40:03,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:40:03,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:40:03,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:40:03,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:40:03,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:40:03,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:40:03,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:40:03,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:40:03,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:40:03,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:40:03,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:40:03,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:40:03,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:40:03,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:40:03,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:40:03,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:40:03,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:40:03,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:40:03,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:40:03,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:40:03,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:40:03,158 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:40:03,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:40:03,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:40:03,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:40:03,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:40:03,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:40:03,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:40:03,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:40:03,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:40:03,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:40:03,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:40:03,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:40:03,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:40:03,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:40:03,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:40:03,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:40:03,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:40:03,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:40:03,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:40:03,163 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:40:03,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:40:03,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:40:03,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 [2022-07-21 09:40:03,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:40:03,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:40:03,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:40:03,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:40:03,521 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:40:03,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2022-07-21 09:40:03,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160d30f58/27ec56ff37c3460e9071c27324c6a93e/FLAG3221582d1 [2022-07-21 09:40:04,367 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:40:04,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2022-07-21 09:40:04,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160d30f58/27ec56ff37c3460e9071c27324c6a93e/FLAG3221582d1 [2022-07-21 09:40:04,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160d30f58/27ec56ff37c3460e9071c27324c6a93e [2022-07-21 09:40:04,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:40:04,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:40:04,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:40:04,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:40:04,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:40:04,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:40:04" (1/1) ... [2022-07-21 09:40:04,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9ae6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:04, skipping insertion in model container [2022-07-21 09:40:04,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:40:04" (1/1) ... [2022-07-21 09:40:04,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:40:04,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:40:04,913 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_satisfies_pred_harness.i[4504,4517] [2022-07-21 09:40:04,920 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_satisfies_pred_harness.i[4564,4577] [2022-07-21 09:40:05,955 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,959 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,960 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,961 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,961 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,975 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,983 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,985 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:05,985 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:40:06,207 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:40:06,207 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:40:06,208 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:40:06,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:40:06,211 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:40:06,212 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:40:06,212 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:40:06,212 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:40:06,213 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:40:06,343 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:40:06,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:40:06,601 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:40:06,625 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_satisfies_pred_harness.i[4504,4517] [2022-07-21 09:40:06,625 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_satisfies_pred_harness.i[4564,4577] [2022-07-21 09:40:06,651 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,657 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,658 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,659 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,659 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:40:06,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:40:06,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:40:06,700 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:40:06,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:40:06,701 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:40:06,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:40:06,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:40:06,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:40:06,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:40:06,729 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:40:06,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:40:06,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:40:07,120 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:40:07,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07 WrapperNode [2022-07-21 09:40:07,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:40:07,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:40:07,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:40:07,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:40:07,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,332 INFO L137 Inliner]: procedures = 690, calls = 2614, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 811 [2022-07-21 09:40:07,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:40:07,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:40:07,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:40:07,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:40:07,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:40:07,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:40:07,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:40:07,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:40:07,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (1/1) ... [2022-07-21 09:40:07,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:40:07,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:07,478 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) [2022-07-21 09:40:07,502 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 [2022-07-21 09:40:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-21 09:40:07,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-21 09:40:07,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:40:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:40:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:40:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:40:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:40:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:40:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2022-07-21 09:40:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2022-07-21 09:40:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:40:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:40:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:40:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:40:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:40:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:40:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:40:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:40:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:40:07,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:40:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:40:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:40:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:40:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:40:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2022-07-21 09:40:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2022-07-21 09:40:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:40:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:40:07,876 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:40:07,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:40:08,852 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:40:08,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:40:08,860 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 09:40:08,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:40:08 BoogieIcfgContainer [2022-07-21 09:40:08,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:40:08,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:40:08,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:40:08,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:40:08,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:40:04" (1/3) ... [2022-07-21 09:40:08,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37172df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:40:08, skipping insertion in model container [2022-07-21 09:40:08,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:40:07" (2/3) ... [2022-07-21 09:40:08,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37172df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:40:08, skipping insertion in model container [2022-07-21 09:40:08,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:40:08" (3/3) ... [2022-07-21 09:40:08,872 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_satisfies_pred_harness.i [2022-07-21 09:40:08,886 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:40:08,887 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:40:08,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:40:08,960 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@21c90114, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f1c48c9 [2022-07-21 09:40:08,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:40:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 64 states have (on average 1.234375) internal successors, (79), 65 states have internal predecessors, (79), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 09:40:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 09:40:08,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:08,975 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:08,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash 843534149, now seen corresponding path program 1 times [2022-07-21 09:40:08,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:08,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690607344] [2022-07-21 09:40:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:40:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:40:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:40:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:40:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 09:40:09,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:09,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690607344] [2022-07-21 09:40:09,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690607344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:09,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:09,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:40:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752293601] [2022-07-21 09:40:09,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:09,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:40:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:40:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:40:09,791 INFO L87 Difference]: Start difference. First operand has 96 states, 64 states have (on average 1.234375) internal successors, (79), 65 states have internal predecessors, (79), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:40:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:09,831 INFO L93 Difference]: Finished difference Result 188 states and 255 transitions. [2022-07-21 09:40:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:40:09,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2022-07-21 09:40:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:09,842 INFO L225 Difference]: With dead ends: 188 [2022-07-21 09:40:09,842 INFO L226 Difference]: Without dead ends: 87 [2022-07-21 09:40:09,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:40:09,849 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:09,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:40:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-21 09:40:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-07-21 09:40:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-21 09:40:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-07-21 09:40:09,891 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 61 [2022-07-21 09:40:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:09,892 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-07-21 09:40:09,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:40:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2022-07-21 09:40:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 09:40:09,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:09,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:09,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:40:09,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2126644258, now seen corresponding path program 1 times [2022-07-21 09:40:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:09,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779727703] [2022-07-21 09:40:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 09:40:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:40:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:40:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:40:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 09:40:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:10,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779727703] [2022-07-21 09:40:10,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779727703] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:10,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590160251] [2022-07-21 09:40:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:10,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:10,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:10,344 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) [2022-07-21 09:40:10,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:40:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:10,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:40:10,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:40:11,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590160251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:11,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-07-21 09:40:11,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171390411] [2022-07-21 09:40:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:11,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:40:11,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:40:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:40:11,073 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:40:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:11,279 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2022-07-21 09:40:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:40:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-07-21 09:40:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:11,285 INFO L225 Difference]: With dead ends: 157 [2022-07-21 09:40:11,285 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 09:40:11,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:40:11,294 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 126 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:11,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 298 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:40:11,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 09:40:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-21 09:40:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 61 states have internal predecessors, (69), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2022-07-21 09:40:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2022-07-21 09:40:11,324 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 63 [2022-07-21 09:40:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:11,325 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2022-07-21 09:40:11,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:40:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2022-07-21 09:40:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 09:40:11,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:11,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-21 09:40:11,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:11,555 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 [2022-07-21 09:40:11,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1088384551, now seen corresponding path program 1 times [2022-07-21 09:40:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:11,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72741619] [2022-07-21 09:40:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:40:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:40:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:40:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:40:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 09:40:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72741619] [2022-07-21 09:40:11,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72741619] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:11,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80795281] [2022-07-21 09:40:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:11,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:11,887 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) [2022-07-21 09:40:11,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:40:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:12,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 09:40:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:40:12,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:12,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80795281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:12,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:12,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-07-21 09:40:12,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315797420] [2022-07-21 09:40:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:12,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:40:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:40:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:40:12,508 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:40:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:12,727 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2022-07-21 09:40:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:40:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2022-07-21 09:40:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:12,729 INFO L225 Difference]: With dead ends: 150 [2022-07-21 09:40:12,729 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 09:40:12,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:40:12,731 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 143 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 464 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:40:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 09:40:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-21 09:40:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 61 states have internal predecessors, (69), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-07-21 09:40:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2022-07-21 09:40:12,739 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 65 [2022-07-21 09:40:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:12,740 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2022-07-21 09:40:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:40:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2022-07-21 09:40:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 09:40:12,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:12,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:12,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:12,959 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 [2022-07-21 09:40:12,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1116444153, now seen corresponding path program 1 times [2022-07-21 09:40:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:12,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156196901] [2022-07-21 09:40:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:40:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:40:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:40:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:40:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:40:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156196901] [2022-07-21 09:40:13,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156196901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:13,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:13,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:40:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447319888] [2022-07-21 09:40:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:40:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:40:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:40:13,360 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 09:40:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:13,445 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2022-07-21 09:40:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:40:13,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-07-21 09:40:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:13,447 INFO L225 Difference]: With dead ends: 102 [2022-07-21 09:40:13,447 INFO L226 Difference]: Without dead ends: 100 [2022-07-21 09:40:13,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:40:13,448 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 16 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:13,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 717 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:40:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-21 09:40:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2022-07-21 09:40:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 68 states have internal predecessors, (75), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2022-07-21 09:40:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2022-07-21 09:40:13,458 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 69 [2022-07-21 09:40:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:13,459 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2022-07-21 09:40:13,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 09:40:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2022-07-21 09:40:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 09:40:13,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:13,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:13,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:40:13,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:13,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1585986623, now seen corresponding path program 1 times [2022-07-21 09:40:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:13,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754737981] [2022-07-21 09:40:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:40:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:40:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:40:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:40:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:40:14,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:14,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754737981] [2022-07-21 09:40:14,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754737981] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:14,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508071317] [2022-07-21 09:40:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:14,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:14,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:14,126 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) [2022-07-21 09:40:14,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:40:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:14,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-21 09:40:14,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:14,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:40:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:40:15,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:40:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 09:40:15,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508071317] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:40:15,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:40:15,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 27 [2022-07-21 09:40:15,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228393288] [2022-07-21 09:40:15,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:40:15,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:40:15,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:15,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:40:15,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:40:15,928 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 27 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-21 09:40:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:17,049 INFO L93 Difference]: Finished difference Result 293 states and 413 transitions. [2022-07-21 09:40:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 09:40:17,050 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 73 [2022-07-21 09:40:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:17,054 INFO L225 Difference]: With dead ends: 293 [2022-07-21 09:40:17,054 INFO L226 Difference]: Without dead ends: 214 [2022-07-21 09:40:17,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 139 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2022-07-21 09:40:17,057 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 161 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:17,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1548 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 756 Invalid, 0 Unknown, 374 Unchecked, 0.7s Time] [2022-07-21 09:40:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-21 09:40:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 150. [2022-07-21 09:40:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 106 states have internal predecessors, (118), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (49), 31 states have call predecessors, (49), 32 states have call successors, (49) [2022-07-21 09:40:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 201 transitions. [2022-07-21 09:40:17,080 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 201 transitions. Word has length 73 [2022-07-21 09:40:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:17,081 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 201 transitions. [2022-07-21 09:40:17,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-21 09:40:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 201 transitions. [2022-07-21 09:40:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 09:40:17,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:17,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:17,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:17,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:17,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash 999277960, now seen corresponding path program 1 times [2022-07-21 09:40:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:17,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453515232] [2022-07-21 09:40:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:17,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:40:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:40:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:40:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:40:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:40:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:17,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453515232] [2022-07-21 09:40:17,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453515232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:17,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:17,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:40:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127588829] [2022-07-21 09:40:17,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:40:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:40:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:40:17,674 INFO L87 Difference]: Start difference. First operand 150 states and 201 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 09:40:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:17,977 INFO L93 Difference]: Finished difference Result 158 states and 209 transitions. [2022-07-21 09:40:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:40:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2022-07-21 09:40:17,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:17,979 INFO L225 Difference]: With dead ends: 158 [2022-07-21 09:40:17,979 INFO L226 Difference]: Without dead ends: 156 [2022-07-21 09:40:17,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:40:17,980 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 35 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:17,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1114 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:40:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-21 09:40:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2022-07-21 09:40:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 106 states have internal predecessors, (118), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (49), 31 states have call predecessors, (49), 32 states have call successors, (49) [2022-07-21 09:40:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 201 transitions. [2022-07-21 09:40:17,996 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 201 transitions. Word has length 75 [2022-07-21 09:40:17,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:17,997 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 201 transitions. [2022-07-21 09:40:17,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 09:40:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 201 transitions. [2022-07-21 09:40:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-21 09:40:17,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:17,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:17,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:40:17,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 490092965, now seen corresponding path program 1 times [2022-07-21 09:40:18,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:18,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82824984] [2022-07-21 09:40:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:18,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:40:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:40:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:40:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:40:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 09:40:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:18,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82824984] [2022-07-21 09:40:18,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82824984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:18,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:18,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:40:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221116093] [2022-07-21 09:40:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:18,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:40:18,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:40:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:40:18,180 INFO L87 Difference]: Start difference. First operand 150 states and 201 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:40:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:18,195 INFO L93 Difference]: Finished difference Result 219 states and 293 transitions. [2022-07-21 09:40:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:40:18,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-07-21 09:40:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:18,198 INFO L225 Difference]: With dead ends: 219 [2022-07-21 09:40:18,198 INFO L226 Difference]: Without dead ends: 153 [2022-07-21 09:40:18,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:40:18,199 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:18,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:40:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-21 09:40:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-07-21 09:40:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 109 states have internal predecessors, (121), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (49), 31 states have call predecessors, (49), 32 states have call successors, (49) [2022-07-21 09:40:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 204 transitions. [2022-07-21 09:40:18,213 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 204 transitions. Word has length 80 [2022-07-21 09:40:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:18,213 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 204 transitions. [2022-07-21 09:40:18,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:40:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 204 transitions. [2022-07-21 09:40:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 09:40:18,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:18,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:18,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:40:18,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:18,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1225398278, now seen corresponding path program 1 times [2022-07-21 09:40:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:18,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065793839] [2022-07-21 09:40:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:40:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:40:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:40:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:40:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:40:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:40:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 09:40:18,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:18,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065793839] [2022-07-21 09:40:18,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065793839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:18,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:18,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:40:18,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069350987] [2022-07-21 09:40:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:18,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:40:18,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:40:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:40:18,426 INFO L87 Difference]: Start difference. First operand 153 states and 204 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:40:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:18,453 INFO L93 Difference]: Finished difference Result 201 states and 262 transitions. [2022-07-21 09:40:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:40:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-07-21 09:40:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:18,456 INFO L225 Difference]: With dead ends: 201 [2022-07-21 09:40:18,456 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 09:40:18,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:40:18,457 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 18 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:18,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 289 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:40:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 09:40:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-21 09:40:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 106 states have internal predecessors, (118), 34 states have call successors, (34), 12 states have call predecessors, (34), 13 states have return successors, (48), 31 states have call predecessors, (48), 32 states have call successors, (48) [2022-07-21 09:40:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2022-07-21 09:40:18,469 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 85 [2022-07-21 09:40:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:18,470 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2022-07-21 09:40:18,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:40:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2022-07-21 09:40:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 09:40:18,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:18,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:18,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:40:18,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -176228817, now seen corresponding path program 1 times [2022-07-21 09:40:18,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:18,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46491736] [2022-07-21 09:40:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:18,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:40:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:40:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:40:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:40:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:40:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 09:40:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46491736] [2022-07-21 09:40:18,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46491736] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085538919] [2022-07-21 09:40:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:18,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:18,851 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) [2022-07-21 09:40:18,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:40:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:19,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-21 09:40:19,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:19,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:40:19,955 INFO L356 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2022-07-21 09:40:19,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 35 [2022-07-21 09:40:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:40:19,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:40:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 09:40:20,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085538919] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:40:20,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:40:20,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 23 [2022-07-21 09:40:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847384570] [2022-07-21 09:40:20,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:40:20,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 09:40:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 09:40:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:40:20,187 INFO L87 Difference]: Start difference. First operand 150 states and 200 transitions. Second operand has 23 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 10 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-21 09:40:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:21,169 INFO L93 Difference]: Finished difference Result 293 states and 388 transitions. [2022-07-21 09:40:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 09:40:21,170 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 10 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 82 [2022-07-21 09:40:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:21,171 INFO L225 Difference]: With dead ends: 293 [2022-07-21 09:40:21,171 INFO L226 Difference]: Without dead ends: 201 [2022-07-21 09:40:21,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 163 SyntacticMatches, 13 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 09:40:21,173 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 124 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:21,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1241 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 767 Invalid, 0 Unknown, 183 Unchecked, 0.6s Time] [2022-07-21 09:40:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-21 09:40:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 164. [2022-07-21 09:40:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 114 states have (on average 1.131578947368421) internal successors, (129), 118 states have internal predecessors, (129), 34 states have call successors, (34), 14 states have call predecessors, (34), 15 states have return successors, (47), 31 states have call predecessors, (47), 32 states have call successors, (47) [2022-07-21 09:40:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 210 transitions. [2022-07-21 09:40:21,188 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 210 transitions. Word has length 82 [2022-07-21 09:40:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:21,189 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 210 transitions. [2022-07-21 09:40:21,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 10 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-21 09:40:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 210 transitions. [2022-07-21 09:40:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 09:40:21,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:21,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:40:21,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:21,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:21,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:21,404 INFO L85 PathProgramCache]: Analyzing trace with hash -146904725, now seen corresponding path program 1 times [2022-07-21 09:40:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:21,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526283899] [2022-07-21 09:40:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:40:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:40:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:40:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:40:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:40:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:40:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 09:40:21,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526283899] [2022-07-21 09:40:21,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526283899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:21,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:21,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:40:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031825020] [2022-07-21 09:40:21,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:21,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:40:21,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:21,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:40:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:40:21,630 INFO L87 Difference]: Start difference. First operand 164 states and 210 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 09:40:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:21,702 INFO L93 Difference]: Finished difference Result 176 states and 222 transitions. [2022-07-21 09:40:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:40:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 87 [2022-07-21 09:40:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:21,704 INFO L225 Difference]: With dead ends: 176 [2022-07-21 09:40:21,704 INFO L226 Difference]: Without dead ends: 174 [2022-07-21 09:40:21,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:40:21,705 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 16 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:21,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 709 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:40:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-21 09:40:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 169. [2022-07-21 09:40:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 121 states have internal predecessors, (132), 35 states have call successors, (35), 15 states have call predecessors, (35), 16 states have return successors, (48), 32 states have call predecessors, (48), 33 states have call successors, (48) [2022-07-21 09:40:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 215 transitions. [2022-07-21 09:40:21,722 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 215 transitions. Word has length 87 [2022-07-21 09:40:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:21,722 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 215 transitions. [2022-07-21 09:40:21,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 09:40:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 215 transitions. [2022-07-21 09:40:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 09:40:21,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:21,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:40:21,725 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1299041201, now seen corresponding path program 1 times [2022-07-21 09:40:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:21,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264740269] [2022-07-21 09:40:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:40:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:40:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:40:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:40:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 09:40:21,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:21,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264740269] [2022-07-21 09:40:21,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264740269] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:21,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717317553] [2022-07-21 09:40:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:21,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:21,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:21,998 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) [2022-07-21 09:40:22,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:40:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:22,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:40:22,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 09:40:22,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:22,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717317553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:22,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:22,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2022-07-21 09:40:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678317903] [2022-07-21 09:40:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:40:22,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:22,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:40:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:40:22,450 INFO L87 Difference]: Start difference. First operand 169 states and 215 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:40:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:22,565 INFO L93 Difference]: Finished difference Result 268 states and 343 transitions. [2022-07-21 09:40:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:40:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2022-07-21 09:40:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:22,566 INFO L225 Difference]: With dead ends: 268 [2022-07-21 09:40:22,567 INFO L226 Difference]: Without dead ends: 173 [2022-07-21 09:40:22,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:40:22,568 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 12 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:22,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 807 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:40:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-21 09:40:22,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2022-07-21 09:40:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 121 states have internal predecessors, (132), 35 states have call successors, (35), 15 states have call predecessors, (35), 16 states have return successors, (47), 32 states have call predecessors, (47), 33 states have call successors, (47) [2022-07-21 09:40:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 214 transitions. [2022-07-21 09:40:22,581 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 214 transitions. Word has length 81 [2022-07-21 09:40:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:22,582 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 214 transitions. [2022-07-21 09:40:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:40:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 214 transitions. [2022-07-21 09:40:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 09:40:22,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:22,583 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:22,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:22,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:40:22,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:22,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash 499080586, now seen corresponding path program 1 times [2022-07-21 09:40:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:22,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887295880] [2022-07-21 09:40:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:40:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:40:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:40:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:40:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:40:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 09:40:23,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:23,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887295880] [2022-07-21 09:40:23,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887295880] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:23,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676569478] [2022-07-21 09:40:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:23,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:23,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:23,067 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) [2022-07-21 09:40:23,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:40:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:23,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:40:23,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 09:40:23,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:23,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676569478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:23,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:23,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2022-07-21 09:40:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186623009] [2022-07-21 09:40:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:40:23,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:40:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:40:23,542 INFO L87 Difference]: Start difference. First operand 169 states and 214 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:40:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:23,645 INFO L93 Difference]: Finished difference Result 272 states and 341 transitions. [2022-07-21 09:40:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:40:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2022-07-21 09:40:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:23,647 INFO L225 Difference]: With dead ends: 272 [2022-07-21 09:40:23,647 INFO L226 Difference]: Without dead ends: 168 [2022-07-21 09:40:23,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:40:23,648 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 12 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:23,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 801 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:40:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-21 09:40:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-21 09:40:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 116 states have (on average 1.1206896551724137) internal successors, (130), 120 states have internal predecessors, (130), 35 states have call successors, (35), 15 states have call predecessors, (35), 16 states have return successors, (46), 32 states have call predecessors, (46), 33 states have call successors, (46) [2022-07-21 09:40:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2022-07-21 09:40:23,661 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 211 transitions. Word has length 83 [2022-07-21 09:40:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:23,662 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 211 transitions. [2022-07-21 09:40:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 09:40:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 211 transitions. [2022-07-21 09:40:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 09:40:23,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:23,663 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 09:40:23,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:23,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:23,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2124358860, now seen corresponding path program 1 times [2022-07-21 09:40:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:23,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100542366] [2022-07-21 09:40:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:23,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:40:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:40:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:40:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 09:40:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:40:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:40:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:40:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:40:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:24,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100542366] [2022-07-21 09:40:24,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100542366] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:24,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110085985] [2022-07-21 09:40:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:24,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:24,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:24,296 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) [2022-07-21 09:40:24,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:40:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:24,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-21 09:40:24,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:25,395 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 25 treesize of output 17 [2022-07-21 09:40:25,399 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 [2022-07-21 09:40:25,402 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 [2022-07-21 09:40:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 09:40:25,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:25,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110085985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:25,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:25,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 23 [2022-07-21 09:40:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572035707] [2022-07-21 09:40:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:25,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:40:25,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:40:25,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:40:25,445 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 3 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 09:40:30,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:30,658 INFO L93 Difference]: Finished difference Result 310 states and 403 transitions. [2022-07-21 09:40:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 09:40:30,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 3 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-07-21 09:40:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:30,660 INFO L225 Difference]: With dead ends: 310 [2022-07-21 09:40:30,660 INFO L226 Difference]: Without dead ends: 221 [2022-07-21 09:40:30,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=204, Invalid=786, Unknown=2, NotChecked=0, Total=992 [2022-07-21 09:40:30,663 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 171 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:30,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 454 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 714 Invalid, 0 Unknown, 119 Unchecked, 0.6s Time] [2022-07-21 09:40:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-21 09:40:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 186. [2022-07-21 09:40:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 135 states have internal predecessors, (147), 36 states have call successors, (36), 16 states have call predecessors, (36), 18 states have return successors, (55), 34 states have call predecessors, (55), 34 states have call successors, (55) [2022-07-21 09:40:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 238 transitions. [2022-07-21 09:40:30,680 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 238 transitions. Word has length 93 [2022-07-21 09:40:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:30,681 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 238 transitions. [2022-07-21 09:40:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 12 states have internal predecessors, (56), 3 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 09:40:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 238 transitions. [2022-07-21 09:40:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 09:40:30,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:30,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:30,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:30,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:30,898 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 213316302, now seen corresponding path program 1 times [2022-07-21 09:40:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:30,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472225342] [2022-07-21 09:40:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:40:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:40:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:40:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 09:40:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:40:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:40:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:40:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 09:40:31,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472225342] [2022-07-21 09:40:31,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472225342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010848424] [2022-07-21 09:40:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:31,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:31,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:31,060 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) [2022-07-21 09:40:31,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:40:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2580 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:40:31,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 09:40:31,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:31,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010848424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:31,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:31,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-21 09:40:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138879384] [2022-07-21 09:40:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:31,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:40:31,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:40:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:40:31,479 INFO L87 Difference]: Start difference. First operand 186 states and 238 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:40:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:31,510 INFO L93 Difference]: Finished difference Result 299 states and 388 transitions. [2022-07-21 09:40:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:40:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-07-21 09:40:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:31,512 INFO L225 Difference]: With dead ends: 299 [2022-07-21 09:40:31,512 INFO L226 Difference]: Without dead ends: 177 [2022-07-21 09:40:31,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:40:31,513 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 6 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:31,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 316 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:40:31,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-21 09:40:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2022-07-21 09:40:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 121 states have (on average 1.0909090909090908) internal successors, (132), 125 states have internal predecessors, (132), 35 states have call successors, (35), 16 states have call predecessors, (35), 17 states have return successors, (46), 32 states have call predecessors, (46), 33 states have call successors, (46) [2022-07-21 09:40:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 213 transitions. [2022-07-21 09:40:31,525 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 213 transitions. Word has length 93 [2022-07-21 09:40:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:31,525 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 213 transitions. [2022-07-21 09:40:31,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:40:31,526 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 213 transitions. [2022-07-21 09:40:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 09:40:31,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:31,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-21 09:40:31,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:31,753 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,SelfDestructingSolverStorable13 [2022-07-21 09:40:31,754 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1747338265, now seen corresponding path program 1 times [2022-07-21 09:40:31,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:31,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60358122] [2022-07-21 09:40:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:40:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:40:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:40:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:40:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:40:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:40:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:40:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 09:40:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:32,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60358122] [2022-07-21 09:40:32,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60358122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:32,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:32,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:40:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36469194] [2022-07-21 09:40:32,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:40:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:40:32,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:40:32,076 INFO L87 Difference]: Start difference. First operand 174 states and 213 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 09:40:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:32,279 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2022-07-21 09:40:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:40:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2022-07-21 09:40:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:32,281 INFO L225 Difference]: With dead ends: 228 [2022-07-21 09:40:32,281 INFO L226 Difference]: Without dead ends: 181 [2022-07-21 09:40:32,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:40:32,282 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 38 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:32,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 373 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:40:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-21 09:40:32,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2022-07-21 09:40:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 122 states have (on average 1.0901639344262295) internal successors, (133), 127 states have internal predecessors, (133), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (52), 35 states have call predecessors, (52), 37 states have call successors, (52) [2022-07-21 09:40:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2022-07-21 09:40:32,296 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 100 [2022-07-21 09:40:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:32,296 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2022-07-21 09:40:32,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 09:40:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2022-07-21 09:40:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 09:40:32,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:32,299 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:32,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 09:40:32,299 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash -250057666, now seen corresponding path program 1 times [2022-07-21 09:40:32,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:32,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138715012] [2022-07-21 09:40:32,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:40:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:40:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:40:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:40:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:40:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 09:40:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138715012] [2022-07-21 09:40:32,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138715012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:32,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111208846] [2022-07-21 09:40:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:32,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:32,615 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) [2022-07-21 09:40:32,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:40:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-21 09:40:33,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:33,113 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 [2022-07-21 09:40:33,116 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 [2022-07-21 09:40:33,321 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 15 treesize of output 7 [2022-07-21 09:40:33,324 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 15 treesize of output 7 [2022-07-21 09:40:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 09:40:33,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:40:33,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111208846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:33,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:40:33,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-21 09:40:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010768885] [2022-07-21 09:40:33,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:33,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:40:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:40:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:40:33,342 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-21 09:40:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:33,450 INFO L93 Difference]: Finished difference Result 331 states and 420 transitions. [2022-07-21 09:40:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:40:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 92 [2022-07-21 09:40:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:33,452 INFO L225 Difference]: With dead ends: 331 [2022-07-21 09:40:33,452 INFO L226 Difference]: Without dead ends: 208 [2022-07-21 09:40:33,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:40:33,453 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 35 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:33,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 524 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-07-21 09:40:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-21 09:40:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 194. [2022-07-21 09:40:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 133 states have (on average 1.0827067669172932) internal successors, (144), 139 states have internal predecessors, (144), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (54), 36 states have call predecessors, (54), 39 states have call successors, (54) [2022-07-21 09:40:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 239 transitions. [2022-07-21 09:40:33,467 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 239 transitions. Word has length 92 [2022-07-21 09:40:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:33,467 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 239 transitions. [2022-07-21 09:40:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-21 09:40:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 239 transitions. [2022-07-21 09:40:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-21 09:40:33,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:33,469 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:33,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:40:33,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:40:33,683 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1187805753, now seen corresponding path program 1 times [2022-07-21 09:40:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:33,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959755366] [2022-07-21 09:40:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:40:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:40:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:40:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:40:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:40:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:40:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 09:40:33,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:33,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959755366] [2022-07-21 09:40:33,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959755366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:33,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:33,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:40:33,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050264265] [2022-07-21 09:40:33,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:33,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:40:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:40:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:40:33,922 INFO L87 Difference]: Start difference. First operand 194 states and 239 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 09:40:34,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:34,288 INFO L93 Difference]: Finished difference Result 202 states and 247 transitions. [2022-07-21 09:40:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:40:34,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 100 [2022-07-21 09:40:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:34,290 INFO L225 Difference]: With dead ends: 202 [2022-07-21 09:40:34,290 INFO L226 Difference]: Without dead ends: 200 [2022-07-21 09:40:34,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:40:34,291 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 51 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:34,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 423 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:40:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-21 09:40:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2022-07-21 09:40:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 142 states have internal predecessors, (147), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (55), 37 states have call predecessors, (55), 40 states have call successors, (55) [2022-07-21 09:40:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 244 transitions. [2022-07-21 09:40:34,305 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 244 transitions. Word has length 100 [2022-07-21 09:40:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:34,306 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 244 transitions. [2022-07-21 09:40:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 09:40:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 244 transitions. [2022-07-21 09:40:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 09:40:34,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:34,307 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:34,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 09:40:34,308 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:34,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:34,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1946355713, now seen corresponding path program 1 times [2022-07-21 09:40:34,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:34,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752664253] [2022-07-21 09:40:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:34,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:40:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:40:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:40:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:40:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:40:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:40:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:40:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:40:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:40:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 23 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 09:40:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752664253] [2022-07-21 09:40:34,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752664253] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:34,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809848935] [2022-07-21 09:40:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:34,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:34,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:34,857 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) [2022-07-21 09:40:34,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:40:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:35,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-21 09:40:35,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:35,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:40:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 09:40:35,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:40:35,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809848935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:35,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:40:35,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 27 [2022-07-21 09:40:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639500561] [2022-07-21 09:40:35,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:40:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:40:35,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:40:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:40:35,992 INFO L87 Difference]: Start difference. First operand 199 states and 244 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 12 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-21 09:40:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:37,688 INFO L93 Difference]: Finished difference Result 343 states and 450 transitions. [2022-07-21 09:40:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 09:40:37,689 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 12 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) Word has length 104 [2022-07-21 09:40:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:37,691 INFO L225 Difference]: With dead ends: 343 [2022-07-21 09:40:37,691 INFO L226 Difference]: Without dead ends: 253 [2022-07-21 09:40:37,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 138 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=341, Invalid=2521, Unknown=0, NotChecked=0, Total=2862 [2022-07-21 09:40:37,693 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 244 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:37,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 378 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1447 Invalid, 0 Unknown, 231 Unchecked, 1.1s Time] [2022-07-21 09:40:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-21 09:40:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 217. [2022-07-21 09:40:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 139 states have (on average 1.0719424460431655) internal successors, (149), 144 states have internal predecessors, (149), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (75), 53 states have call predecessors, (75), 55 states have call successors, (75) [2022-07-21 09:40:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 281 transitions. [2022-07-21 09:40:37,715 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 281 transitions. Word has length 104 [2022-07-21 09:40:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 281 transitions. [2022-07-21 09:40:37,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 12 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-21 09:40:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 281 transitions. [2022-07-21 09:40:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 09:40:37,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:37,718 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:37,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-21 09:40:37,931 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,SelfDestructingSolverStorable17 [2022-07-21 09:40:37,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1261447352, now seen corresponding path program 1 times [2022-07-21 09:40:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:37,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827916172] [2022-07-21 09:40:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:40:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:40:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:40:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:40:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:40:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:40:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:40:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:40:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:40:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:40:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:40:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827916172] [2022-07-21 09:40:38,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827916172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:38,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:38,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-21 09:40:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94120725] [2022-07-21 09:40:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:38,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 09:40:38,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 09:40:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:40:38,986 INFO L87 Difference]: Start difference. First operand 217 states and 281 transitions. Second operand has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-21 09:40:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:40,150 INFO L93 Difference]: Finished difference Result 335 states and 444 transitions. [2022-07-21 09:40:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 09:40:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 109 [2022-07-21 09:40:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:40,153 INFO L225 Difference]: With dead ends: 335 [2022-07-21 09:40:40,153 INFO L226 Difference]: Without dead ends: 267 [2022-07-21 09:40:40,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:40:40,154 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 144 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:40,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 645 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 09:40:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-21 09:40:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 250. [2022-07-21 09:40:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 158 states have (on average 1.0632911392405062) internal successors, (168), 164 states have internal predecessors, (168), 68 states have call successors, (68), 20 states have call predecessors, (68), 23 states have return successors, (96), 65 states have call predecessors, (96), 66 states have call successors, (96) [2022-07-21 09:40:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 332 transitions. [2022-07-21 09:40:40,180 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 332 transitions. Word has length 109 [2022-07-21 09:40:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:40,182 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 332 transitions. [2022-07-21 09:40:40,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 16 states have internal predecessors, (56), 9 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-21 09:40:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 332 transitions. [2022-07-21 09:40:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 09:40:40,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:40,184 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:40,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 09:40:40,184 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1003281914, now seen corresponding path program 1 times [2022-07-21 09:40:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:40,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748547174] [2022-07-21 09:40:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:40,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:40:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:40:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:40:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:40:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:40:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:40:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:40:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:40:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:40:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:40:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-21 09:40:40,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748547174] [2022-07-21 09:40:40,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748547174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:40:40,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:40:40,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:40:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082326520] [2022-07-21 09:40:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:40:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:40:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:40:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:40:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:40:40,462 INFO L87 Difference]: Start difference. First operand 250 states and 332 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 09:40:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:40:40,677 INFO L93 Difference]: Finished difference Result 332 states and 443 transitions. [2022-07-21 09:40:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:40:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2022-07-21 09:40:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:40:40,680 INFO L225 Difference]: With dead ends: 332 [2022-07-21 09:40:40,680 INFO L226 Difference]: Without dead ends: 242 [2022-07-21 09:40:40,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:40:40,681 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 43 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:40:40,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 220 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:40:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-21 09:40:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-07-21 09:40:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 152 states have (on average 1.0592105263157894) internal successors, (161), 157 states have internal predecessors, (161), 67 states have call successors, (67), 20 states have call predecessors, (67), 22 states have return successors, (86), 64 states have call predecessors, (86), 65 states have call successors, (86) [2022-07-21 09:40:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 314 transitions. [2022-07-21 09:40:40,705 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 314 transitions. Word has length 109 [2022-07-21 09:40:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:40:40,705 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 314 transitions. [2022-07-21 09:40:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 09:40:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 314 transitions. [2022-07-21 09:40:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 09:40:40,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:40:40,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:40:40,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 09:40:40,707 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:40:40,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:40:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1112110986, now seen corresponding path program 1 times [2022-07-21 09:40:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:40:40,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610501226] [2022-07-21 09:40:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:40:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:40:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:40:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:40:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:40:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:40:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:40:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:40:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:40:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:40:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:40:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:40:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:40:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:40:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:40:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610501226] [2022-07-21 09:40:41,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610501226] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:40:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800555280] [2022-07-21 09:40:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:40:41,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:40:41,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:40:41,896 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) [2022-07-21 09:40:41,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:40:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:40:42,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-21 09:40:42,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:40:42,389 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 [2022-07-21 09:40:42,522 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:40:42,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:40:42,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 09:40:42,887 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-07-21 09:40:42,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-07-21 09:40:42,930 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 23 treesize of output 23 [2022-07-21 09:40:47,038 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 23 treesize of output 23 [2022-07-21 09:41:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:41:03,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:41:03,404 INFO L356 Elim1Store]: treesize reduction 57, result has 18.6 percent of original size [2022-07-21 09:41:03,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 34 [2022-07-21 09:41:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:41:07,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:41:09,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800555280] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:09,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:41:09,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 33 [2022-07-21 09:41:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113523565] [2022-07-21 09:41:09,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:41:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:41:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:41:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1324, Unknown=3, NotChecked=0, Total=1482 [2022-07-21 09:41:09,037 INFO L87 Difference]: Start difference. First operand 242 states and 314 transitions. Second operand has 33 states, 32 states have (on average 3.8125) internal successors, (122), 29 states have internal predecessors, (122), 12 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 13 states have call predecessors, (23), 10 states have call successors, (23) [2022-07-21 09:41:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:11,790 INFO L93 Difference]: Finished difference Result 373 states and 452 transitions. [2022-07-21 09:41:11,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 09:41:11,791 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.8125) internal successors, (122), 29 states have internal predecessors, (122), 12 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 13 states have call predecessors, (23), 10 states have call successors, (23) Word has length 112 [2022-07-21 09:41:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:11,793 INFO L225 Difference]: With dead ends: 373 [2022-07-21 09:41:11,793 INFO L226 Difference]: Without dead ends: 307 [2022-07-21 09:41:11,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 18 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=284, Invalid=2682, Unknown=4, NotChecked=0, Total=2970 [2022-07-21 09:41:11,795 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 101 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 628 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:11,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 726 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 682 Invalid, 0 Unknown, 628 Unchecked, 0.4s Time] [2022-07-21 09:41:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-21 09:41:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-07-21 09:41:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 209 states have (on average 1.062200956937799) internal successors, (222), 215 states have internal predecessors, (222), 65 states have call successors, (65), 29 states have call predecessors, (65), 32 states have return successors, (82), 62 states have call predecessors, (82), 63 states have call successors, (82) [2022-07-21 09:41:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 369 transitions. [2022-07-21 09:41:11,824 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 369 transitions. Word has length 112 [2022-07-21 09:41:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:11,824 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 369 transitions. [2022-07-21 09:41:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.8125) internal successors, (122), 29 states have internal predecessors, (122), 12 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 13 states have call predecessors, (23), 10 states have call successors, (23) [2022-07-21 09:41:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 369 transitions. [2022-07-21 09:41:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 09:41:11,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:11,826 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:11,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-21 09:41:12,039 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,SelfDestructingSolverStorable20 [2022-07-21 09:41:12,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 634770534, now seen corresponding path program 1 times [2022-07-21 09:41:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:12,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625382434] [2022-07-21 09:41:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:41:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:41:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:41:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:41:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:41:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:41:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:41:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:41:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:41:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:41:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-21 09:41:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625382434] [2022-07-21 09:41:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625382434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:12,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:12,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:41:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016198005] [2022-07-21 09:41:12,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:12,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:41:12,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:12,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:41:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:41:12,322 INFO L87 Difference]: Start difference. First operand 307 states and 369 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 09:41:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:12,693 INFO L93 Difference]: Finished difference Result 315 states and 377 transitions. [2022-07-21 09:41:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:41:12,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 115 [2022-07-21 09:41:12,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:12,695 INFO L225 Difference]: With dead ends: 315 [2022-07-21 09:41:12,696 INFO L226 Difference]: Without dead ends: 313 [2022-07-21 09:41:12,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:41:12,697 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 49 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:12,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 422 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:41:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-21 09:41:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2022-07-21 09:41:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 212 states have (on average 1.0613207547169812) internal successors, (225), 218 states have internal predecessors, (225), 66 states have call successors, (66), 30 states have call predecessors, (66), 33 states have return successors, (83), 63 states have call predecessors, (83), 64 states have call successors, (83) [2022-07-21 09:41:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 374 transitions. [2022-07-21 09:41:12,725 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 374 transitions. Word has length 115 [2022-07-21 09:41:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:12,726 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 374 transitions. [2022-07-21 09:41:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 09:41:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 374 transitions. [2022-07-21 09:41:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 09:41:12,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:12,728 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 09:41:12,728 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1305766989, now seen corresponding path program 1 times [2022-07-21 09:41:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:12,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498019966] [2022-07-21 09:41:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:41:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:41:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:41:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:41:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:41:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:41:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:41:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 09:41:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:41:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:41:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 09:41:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-21 09:41:13,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:13,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498019966] [2022-07-21 09:41:13,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498019966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:13,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:13,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:41:13,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057463320] [2022-07-21 09:41:13,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:13,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:41:13,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:41:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:41:13,182 INFO L87 Difference]: Start difference. First operand 312 states and 374 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 09:41:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:13,832 INFO L93 Difference]: Finished difference Result 325 states and 387 transitions. [2022-07-21 09:41:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:41:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2022-07-21 09:41:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:13,834 INFO L225 Difference]: With dead ends: 325 [2022-07-21 09:41:13,834 INFO L226 Difference]: Without dead ends: 211 [2022-07-21 09:41:13,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:41:13,835 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 78 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:13,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 269 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:41:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-21 09:41:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2022-07-21 09:41:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 139 states have (on average 1.079136690647482) internal successors, (150), 143 states have internal predecessors, (150), 46 states have call successors, (46), 19 states have call predecessors, (46), 21 states have return successors, (61), 44 states have call predecessors, (61), 44 states have call successors, (61) [2022-07-21 09:41:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2022-07-21 09:41:13,855 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 125 [2022-07-21 09:41:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:13,855 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2022-07-21 09:41:13,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 09:41:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2022-07-21 09:41:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 09:41:13,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:13,857 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 09:41:13,857 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash 868973393, now seen corresponding path program 1 times [2022-07-21 09:41:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:13,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587834344] [2022-07-21 09:41:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:41:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:41:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:41:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:41:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:41:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:41:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:41:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 09:41:14,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:14,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587834344] [2022-07-21 09:41:14,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587834344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:14,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:14,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-21 09:41:14,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681066527] [2022-07-21 09:41:14,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:14,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 09:41:14,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:14,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 09:41:14,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:41:14,928 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 24 states, 22 states have (on average 2.727272727272727) internal successors, (60), 20 states have internal predecessors, (60), 11 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 11 states have call predecessors, (14), 9 states have call successors, (14) [2022-07-21 09:41:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:15,999 INFO L93 Difference]: Finished difference Result 277 states and 340 transitions. [2022-07-21 09:41:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:41:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.727272727272727) internal successors, (60), 20 states have internal predecessors, (60), 11 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 11 states have call predecessors, (14), 9 states have call successors, (14) Word has length 129 [2022-07-21 09:41:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:16,001 INFO L225 Difference]: With dead ends: 277 [2022-07-21 09:41:16,001 INFO L226 Difference]: Without dead ends: 207 [2022-07-21 09:41:16,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 09:41:16,002 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 144 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:16,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 343 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 09:41:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-21 09:41:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2022-07-21 09:41:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 140 states have internal predecessors, (147), 44 states have call successors, (44), 19 states have call predecessors, (44), 20 states have return successors, (53), 41 states have call predecessors, (53), 42 states have call successors, (53) [2022-07-21 09:41:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2022-07-21 09:41:16,020 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 129 [2022-07-21 09:41:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:16,020 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2022-07-21 09:41:16,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.727272727272727) internal successors, (60), 20 states have internal predecessors, (60), 11 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 11 states have call predecessors, (14), 9 states have call successors, (14) [2022-07-21 09:41:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2022-07-21 09:41:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 09:41:16,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:16,022 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:16,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 09:41:16,022 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:16,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1381910248, now seen corresponding path program 1 times [2022-07-21 09:41:16,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:16,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241078829] [2022-07-21 09:41:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:41:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:41:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:41:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:41:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:41:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:41:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:41:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-21 09:41:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241078829] [2022-07-21 09:41:16,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241078829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:16,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:16,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 09:41:16,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336117674] [2022-07-21 09:41:16,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:41:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:41:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:41:16,373 INFO L87 Difference]: Start difference. First operand 201 states and 244 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:41:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:16,902 INFO L93 Difference]: Finished difference Result 207 states and 249 transitions. [2022-07-21 09:41:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:41:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2022-07-21 09:41:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:16,904 INFO L225 Difference]: With dead ends: 207 [2022-07-21 09:41:16,904 INFO L226 Difference]: Without dead ends: 205 [2022-07-21 09:41:16,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:41:16,905 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 75 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:16,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 625 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:41:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-21 09:41:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2022-07-21 09:41:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 140 states have internal predecessors, (147), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (51), 39 states have call predecessors, (51), 40 states have call successors, (51) [2022-07-21 09:41:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 240 transitions. [2022-07-21 09:41:16,922 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 240 transitions. Word has length 131 [2022-07-21 09:41:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:16,922 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 240 transitions. [2022-07-21 09:41:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 09:41:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 240 transitions. [2022-07-21 09:41:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-21 09:41:16,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:16,924 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:16,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 09:41:16,924 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash 716580214, now seen corresponding path program 1 times [2022-07-21 09:41:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199862284] [2022-07-21 09:41:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:41:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:41:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:41:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:41:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:41:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 09:41:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:41:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-21 09:41:17,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:17,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199862284] [2022-07-21 09:41:17,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199862284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:17,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:17,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:41:17,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208157847] [2022-07-21 09:41:17,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:17,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:41:17,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:17,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:41:17,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:41:17,389 INFO L87 Difference]: Start difference. First operand 199 states and 240 transitions. Second operand has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 7 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-21 09:41:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:18,141 INFO L93 Difference]: Finished difference Result 233 states and 285 transitions. [2022-07-21 09:41:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:41:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 7 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 143 [2022-07-21 09:41:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:18,143 INFO L225 Difference]: With dead ends: 233 [2022-07-21 09:41:18,143 INFO L226 Difference]: Without dead ends: 220 [2022-07-21 09:41:18,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:41:18,144 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 106 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:18,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 325 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:41:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-21 09:41:18,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 212. [2022-07-21 09:41:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 146 states have internal predecessors, (153), 48 states have call successors, (48), 19 states have call predecessors, (48), 21 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2022-07-21 09:41:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 259 transitions. [2022-07-21 09:41:18,163 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 259 transitions. Word has length 143 [2022-07-21 09:41:18,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:18,163 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 259 transitions. [2022-07-21 09:41:18,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 7 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-21 09:41:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 259 transitions. [2022-07-21 09:41:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 09:41:18,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:18,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:18,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 09:41:18,165 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:18,166 INFO L85 PathProgramCache]: Analyzing trace with hash 59693077, now seen corresponding path program 1 times [2022-07-21 09:41:18,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:18,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691067384] [2022-07-21 09:41:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:18,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:41:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:41:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:41:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:41:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 09:41:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 09:41:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:41:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 09:41:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-07-21 09:41:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691067384] [2022-07-21 09:41:18,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691067384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:18,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:18,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:41:18,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449263368] [2022-07-21 09:41:18,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:41:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:41:18,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:41:18,580 INFO L87 Difference]: Start difference. First operand 212 states and 259 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-21 09:41:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:19,194 INFO L93 Difference]: Finished difference Result 229 states and 278 transitions. [2022-07-21 09:41:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:41:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 6 states have call successors, (19) Word has length 149 [2022-07-21 09:41:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:19,197 INFO L225 Difference]: With dead ends: 229 [2022-07-21 09:41:19,197 INFO L226 Difference]: Without dead ends: 192 [2022-07-21 09:41:19,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-07-21 09:41:19,198 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 73 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:19,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 299 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:41:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-21 09:41:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2022-07-21 09:41:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 128 states have (on average 1.078125) internal successors, (138), 133 states have internal predecessors, (138), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (47), 36 states have call predecessors, (47), 37 states have call successors, (47) [2022-07-21 09:41:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 224 transitions. [2022-07-21 09:41:19,215 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 224 transitions. Word has length 149 [2022-07-21 09:41:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:19,215 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 224 transitions. [2022-07-21 09:41:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-21 09:41:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 224 transitions. [2022-07-21 09:41:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 09:41:19,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:19,217 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:19,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 09:41:19,218 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:19,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1529409860, now seen corresponding path program 1 times [2022-07-21 09:41:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:19,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726148784] [2022-07-21 09:41:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:19,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:41:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:41:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:41:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:41:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:41:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:41:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 09:41:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 09:41:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:19,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726148784] [2022-07-21 09:41:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726148784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:19,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:19,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:41:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454824088] [2022-07-21 09:41:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:41:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:41:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:41:19,607 INFO L87 Difference]: Start difference. First operand 188 states and 224 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 09:41:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:20,269 INFO L93 Difference]: Finished difference Result 194 states and 229 transitions. [2022-07-21 09:41:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:41:20,270 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2022-07-21 09:41:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:20,271 INFO L225 Difference]: With dead ends: 194 [2022-07-21 09:41:20,271 INFO L226 Difference]: Without dead ends: 192 [2022-07-21 09:41:20,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:41:20,272 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 71 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:20,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 607 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:41:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-21 09:41:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2022-07-21 09:41:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.078125) internal successors, (138), 133 states have internal predecessors, (138), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (46), 35 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-21 09:41:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2022-07-21 09:41:20,289 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 151 [2022-07-21 09:41:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:20,289 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2022-07-21 09:41:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 11 states have internal predecessors, (65), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 09:41:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2022-07-21 09:41:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 09:41:20,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:20,291 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:20,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 09:41:20,291 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1434041611, now seen corresponding path program 1 times [2022-07-21 09:41:20,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:20,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749721346] [2022-07-21 09:41:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:41:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:41:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:41:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:41:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:41:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:41:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:41:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 09:41:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 09:41:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-21 09:41:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:20,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749721346] [2022-07-21 09:41:20,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749721346] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:20,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166819225] [2022-07-21 09:41:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:20,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:41:20,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:41:20,716 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) [2022-07-21 09:41:20,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:41:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:21,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-21 09:41:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:41:21,221 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 [2022-07-21 09:41:21,405 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 [2022-07-21 09:41:21,418 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:41:21,418 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 [2022-07-21 09:41:21,422 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 [2022-07-21 09:41:21,463 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 [2022-07-21 09:41:21,474 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:41:21,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-21 09:41:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 78 proven. 73 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 09:41:22,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:41:24,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166819225] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:24,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:41:24,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28] total 35 [2022-07-21 09:41:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998102683] [2022-07-21 09:41:24,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:41:24,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 09:41:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 09:41:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1706, Unknown=1, NotChecked=0, Total=1892 [2022-07-21 09:41:24,378 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 35 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 12 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2022-07-21 09:41:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:26,410 INFO L93 Difference]: Finished difference Result 381 states and 469 transitions. [2022-07-21 09:41:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-21 09:41:26,411 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 12 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) Word has length 155 [2022-07-21 09:41:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:26,413 INFO L225 Difference]: With dead ends: 381 [2022-07-21 09:41:26,413 INFO L226 Difference]: Without dead ends: 308 [2022-07-21 09:41:26,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 196 SyntacticMatches, 11 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1907 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=509, Invalid=5190, Unknown=1, NotChecked=0, Total=5700 [2022-07-21 09:41:26,415 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 112 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 647 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:26,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1120 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1782 Invalid, 0 Unknown, 647 Unchecked, 1.0s Time] [2022-07-21 09:41:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-21 09:41:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 244. [2022-07-21 09:41:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 170 states have (on average 1.0705882352941176) internal successors, (182), 176 states have internal predecessors, (182), 46 states have call successors, (46), 23 states have call predecessors, (46), 27 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2022-07-21 09:41:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 294 transitions. [2022-07-21 09:41:26,440 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 294 transitions. Word has length 155 [2022-07-21 09:41:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:26,440 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 294 transitions. [2022-07-21 09:41:26,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 12 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2022-07-21 09:41:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 294 transitions. [2022-07-21 09:41:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 09:41:26,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:26,442 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:26,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-21 09:41:26,667 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,SelfDestructingSolverStorable28 [2022-07-21 09:41:26,668 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 461759356, now seen corresponding path program 1 times [2022-07-21 09:41:26,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:26,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638421212] [2022-07-21 09:41:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:26,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:41:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:41:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:41:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:41:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:41:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:41:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:41:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 09:41:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 09:41:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 09:41:26,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:26,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638421212] [2022-07-21 09:41:26,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638421212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:26,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:41:26,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:41:26,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288314956] [2022-07-21 09:41:26,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:26,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:41:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:26,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:41:26,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:41:26,959 INFO L87 Difference]: Start difference. First operand 244 states and 294 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:41:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:27,366 INFO L93 Difference]: Finished difference Result 258 states and 308 transitions. [2022-07-21 09:41:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:41:27,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 157 [2022-07-21 09:41:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:27,368 INFO L225 Difference]: With dead ends: 258 [2022-07-21 09:41:27,368 INFO L226 Difference]: Without dead ends: 256 [2022-07-21 09:41:27,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:41:27,369 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 52 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:27,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 536 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:41:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-21 09:41:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 244. [2022-07-21 09:41:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 170 states have (on average 1.0705882352941176) internal successors, (182), 176 states have internal predecessors, (182), 46 states have call successors, (46), 23 states have call predecessors, (46), 27 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2022-07-21 09:41:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 294 transitions. [2022-07-21 09:41:27,391 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 294 transitions. Word has length 157 [2022-07-21 09:41:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:27,391 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 294 transitions. [2022-07-21 09:41:27,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:41:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 294 transitions. [2022-07-21 09:41:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:41:27,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:27,393 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 09:41:27,394 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash -112653674, now seen corresponding path program 1 times [2022-07-21 09:41:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:27,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935993018] [2022-07-21 09:41:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:41:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:41:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:41:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:41:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:41:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:41:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:41:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 09:41:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 09:41:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 09:41:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-21 09:41:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:27,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935993018] [2022-07-21 09:41:27,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935993018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:27,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430671725] [2022-07-21 09:41:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:27,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:41:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:41:27,713 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) [2022-07-21 09:41:27,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:41:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:41:28,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:41:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-21 09:41:28,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:41:28,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430671725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:41:28,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:41:28,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-07-21 09:41:28,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578345168] [2022-07-21 09:41:28,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:41:28,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:41:28,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:41:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:41:28,266 INFO L87 Difference]: Start difference. First operand 244 states and 294 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 09:41:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:28,427 INFO L93 Difference]: Finished difference Result 411 states and 506 transitions. [2022-07-21 09:41:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:41:28,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-07-21 09:41:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:28,429 INFO L225 Difference]: With dead ends: 411 [2022-07-21 09:41:28,429 INFO L226 Difference]: Without dead ends: 199 [2022-07-21 09:41:28,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:41:28,431 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 13 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:28,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 348 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-07-21 09:41:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-21 09:41:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-07-21 09:41:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.0507246376811594) internal successors, (145), 143 states have internal predecessors, (145), 38 states have call successors, (38), 20 states have call predecessors, (38), 22 states have return successors, (45), 35 states have call predecessors, (45), 36 states have call successors, (45) [2022-07-21 09:41:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 228 transitions. [2022-07-21 09:41:28,448 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 228 transitions. Word has length 161 [2022-07-21 09:41:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:28,449 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 228 transitions. [2022-07-21 09:41:28,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 09:41:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 228 transitions. [2022-07-21 09:41:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 09:41:28,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:28,451 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:28,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:41:28,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-21 09:41:28,667 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:28,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:28,668 INFO L85 PathProgramCache]: Analyzing trace with hash 829993090, now seen corresponding path program 1 times [2022-07-21 09:41:28,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:28,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959393030] [2022-07-21 09:41:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:28,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:41:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:41:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:28,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:41:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:41:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:41:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:41:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 09:41:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 09:41:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 09:41:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 09:41:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-21 09:41:29,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959393030] [2022-07-21 09:41:29,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959393030] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390202834] [2022-07-21 09:41:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:29,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:41:29,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:41:29,093 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) [2022-07-21 09:41:29,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:41:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:29,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-21 09:41:29,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:41:29,930 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:41:29,930 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 [2022-07-21 09:41:29,940 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 6 [2022-07-21 09:41:30,854 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 17 treesize of output 9 [2022-07-21 09:41:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 86 proven. 43 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-21 09:41:30,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:41:31,140 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-07-21 09:41:31,140 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 73 treesize of output 57 [2022-07-21 09:41:31,158 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:41:31,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2022-07-21 09:41:31,655 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1331 (Array Int Int)) (|aws_byte_cursor_left_trim_pred_~#trimmed~1.base| Int)) (let ((.cse0 (store |c_#memory_int| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base| v_ArrVal_1331))) (or (not (= (mod (select (select .cse0 c_aws_byte_cursor_left_trim_pred_~source.base) c_aws_byte_cursor_left_trim_pred_~source.offset) 18446744073709551616) 0)) (< 0 (mod (select v_ArrVal_1331 |c_aws_byte_cursor_left_trim_pred_~#trimmed~1.offset|) 18446744073709551616)) (let ((.cse1 (select .cse0 |c_aws_byte_cursor_left_trim_pred_#in~source.base|))) (and (= (mod (select .cse1 |c_aws_byte_cursor_left_trim_pred_#in~source.offset|) 18446744073709551616) 0) (<= (mod (select .cse1 0) 18446744073709551616) 0)))))) is different from false [2022-07-21 09:41:31,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390202834] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:31,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:41:31,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23] total 30 [2022-07-21 09:41:31,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45099684] [2022-07-21 09:41:31,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:41:31,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 09:41:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:41:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 09:41:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1063, Unknown=1, NotChecked=66, Total=1260 [2022-07-21 09:41:31,760 INFO L87 Difference]: Start difference. First operand 199 states and 228 transitions. Second operand has 30 states, 28 states have (on average 4.642857142857143) internal successors, (130), 28 states have internal predecessors, (130), 15 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-21 09:41:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:41:33,680 INFO L93 Difference]: Finished difference Result 279 states and 310 transitions. [2022-07-21 09:41:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 09:41:33,680 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.642857142857143) internal successors, (130), 28 states have internal predecessors, (130), 15 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) Word has length 164 [2022-07-21 09:41:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:41:33,681 INFO L225 Difference]: With dead ends: 279 [2022-07-21 09:41:33,681 INFO L226 Difference]: Without dead ends: 177 [2022-07-21 09:41:33,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 240 SyntacticMatches, 16 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=419, Invalid=3366, Unknown=1, NotChecked=120, Total=3906 [2022-07-21 09:41:33,683 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 130 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 581 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:41:33,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 668 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1566 Invalid, 0 Unknown, 581 Unchecked, 1.0s Time] [2022-07-21 09:41:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-21 09:41:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2022-07-21 09:41:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 122 states have (on average 1.0491803278688525) internal successors, (128), 126 states have internal predecessors, (128), 29 states have call successors, (29), 19 states have call predecessors, (29), 19 states have return successors, (29), 25 states have call predecessors, (29), 27 states have call successors, (29) [2022-07-21 09:41:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 186 transitions. [2022-07-21 09:41:33,698 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 186 transitions. Word has length 164 [2022-07-21 09:41:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:41:33,698 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 186 transitions. [2022-07-21 09:41:33,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.642857142857143) internal successors, (130), 28 states have internal predecessors, (130), 15 states have call successors, (40), 6 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 14 states have call successors, (39) [2022-07-21 09:41:33,699 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 186 transitions. [2022-07-21 09:41:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-21 09:41:33,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:41:33,700 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:41:33,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:41:33,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:41:33,915 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:41:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:41:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1370202819, now seen corresponding path program 1 times [2022-07-21 09:41:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:41:33,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492400102] [2022-07-21 09:41:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:41:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:41:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:41:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:41:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:41:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:41:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:41:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:41:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:41:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:41:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:41:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:41:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:41:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:41:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:41:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:41:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 09:41:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 09:41:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 09:41:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 52 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-21 09:41:35,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:41:35,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492400102] [2022-07-21 09:41:35,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492400102] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:41:35,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774278656] [2022-07-21 09:41:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:41:35,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:41:35,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:41:35,104 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) [2022-07-21 09:41:35,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:41:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:41:35,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-21 09:41:35,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:41:35,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:41:35,664 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-07-21 09:41:35,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2022-07-21 09:41:35,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-07-21 09:41:36,003 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:41:36,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:41:36,041 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 23 treesize of output 23 [2022-07-21 09:41:51,410 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 23 treesize of output 23 [2022-07-21 09:41:57,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:41:59,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:42:03,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:42:08,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:42:10,124 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:42:10,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2022-07-21 09:42:10,150 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 13 treesize of output 9 [2022-07-21 09:42:10,579 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-21 09:42:10,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 33 [2022-07-21 09:42:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 80 proven. 133 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:42:31,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:42:35,085 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:42:35,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-21 09:42:35,098 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int)) (|v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_28| Int)) (or (and (= |c_ULTIMATE.start_aws_byte_cursor_satisfies_pred_~source#1.offset| 0) (= |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_28| |c_ULTIMATE.start_aws_byte_cursor_satisfies_pred_~source#1.base|)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_28| v_ArrVal_1468) |c_ULTIMATE.start_aws_byte_cursor_satisfies_pred_harness_~#cur~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_cursor_satisfies_pred_harness_~#cur~3#1.offset|)) 0)))) is different from false [2022-07-21 09:42:35,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774278656] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:42:35,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:42:35,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 47 [2022-07-21 09:42:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470880661] [2022-07-21 09:42:35,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:42:35,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-21 09:42:35,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:42:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-21 09:42:35,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2772, Unknown=68, NotChecked=108, Total=3192 [2022-07-21 09:42:35,102 INFO L87 Difference]: Start difference. First operand 171 states and 186 transitions. Second operand has 47 states, 44 states have (on average 3.590909090909091) internal successors, (158), 43 states have internal predecessors, (158), 21 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2022-07-21 09:43:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:00,235 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2022-07-21 09:43:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-21 09:43:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 3.590909090909091) internal successors, (158), 43 states have internal predecessors, (158), 21 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) Word has length 170 [2022-07-21 09:43:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:00,237 INFO L225 Difference]: With dead ends: 275 [2022-07-21 09:43:00,237 INFO L226 Difference]: Without dead ends: 253 [2022-07-21 09:43:00,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 201 SyntacticMatches, 18 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2721 ImplicationChecksByTransitivity, 83.3s TimeCoverageRelationStatistics Valid=543, Invalid=6476, Unknown=125, NotChecked=166, Total=7310 [2022-07-21 09:43:00,240 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 223 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1738 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:00,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 808 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1107 Invalid, 0 Unknown, 1738 Unchecked, 0.6s Time] [2022-07-21 09:43:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-21 09:43:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2022-07-21 09:43:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 181 states have (on average 1.0497237569060773) internal successors, (190), 185 states have internal predecessors, (190), 40 states have call successors, (40), 26 states have call predecessors, (40), 27 states have return successors, (42), 37 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-21 09:43:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 272 transitions. [2022-07-21 09:43:00,262 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 272 transitions. Word has length 170 [2022-07-21 09:43:00,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:00,263 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 272 transitions. [2022-07-21 09:43:00,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 3.590909090909091) internal successors, (158), 43 states have internal predecessors, (158), 21 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2022-07-21 09:43:00,263 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 272 transitions. [2022-07-21 09:43:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-21 09:43:00,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:00,265 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:00,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:43:00,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:00,467 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1226241014, now seen corresponding path program 1 times [2022-07-21 09:43:00,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:00,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204707985] [2022-07-21 09:43:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:00,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:43:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:43:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:43:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:43:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:43:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:43:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:43:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:43:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:43:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:43:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:43:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:43:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:43:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 09:43:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 09:43:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 09:43:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-21 09:43:00,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:00,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204707985] [2022-07-21 09:43:00,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204707985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:00,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:00,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:43:00,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042350645] [2022-07-21 09:43:00,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:00,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:43:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:43:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:43:00,877 INFO L87 Difference]: Start difference. First operand 249 states and 272 transitions. Second operand has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:43:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:01,484 INFO L93 Difference]: Finished difference Result 257 states and 280 transitions. [2022-07-21 09:43:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:43:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 172 [2022-07-21 09:43:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:01,486 INFO L225 Difference]: With dead ends: 257 [2022-07-21 09:43:01,486 INFO L226 Difference]: Without dead ends: 255 [2022-07-21 09:43:01,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:43:01,487 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 100 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:01,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 591 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:43:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-21 09:43:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2022-07-21 09:43:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 184 states have (on average 1.048913043478261) internal successors, (193), 188 states have internal predecessors, (193), 41 states have call successors, (41), 27 states have call predecessors, (41), 28 states have return successors, (43), 38 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-21 09:43:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 277 transitions. [2022-07-21 09:43:01,509 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 277 transitions. Word has length 172 [2022-07-21 09:43:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:01,509 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 277 transitions. [2022-07-21 09:43:01,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 11 states have internal predecessors, (67), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 09:43:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 277 transitions. [2022-07-21 09:43:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:43:01,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:01,511 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:01,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 09:43:01,511 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:01,512 INFO L85 PathProgramCache]: Analyzing trace with hash 105568753, now seen corresponding path program 1 times [2022-07-21 09:43:01,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664844083] [2022-07-21 09:43:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:01,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:43:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:43:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:43:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:43:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:43:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:43:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:43:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:43:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:43:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:43:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:43:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 09:43:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:43:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:43:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 09:43:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 09:43:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 09:43:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-21 09:43:01,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664844083] [2022-07-21 09:43:01,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664844083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:01,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774461443] [2022-07-21 09:43:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:01,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:01,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:01,969 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) [2022-07-21 09:43:01,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:43:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:02,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2916 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:43:02,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 09:43:02,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:02,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774461443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:02,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:43:02,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-07-21 09:43:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330436394] [2022-07-21 09:43:02,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:02,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:43:02,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:02,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:43:02,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:43:02,756 INFO L87 Difference]: Start difference. First operand 254 states and 277 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:43:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:02,867 INFO L93 Difference]: Finished difference Result 353 states and 376 transitions. [2022-07-21 09:43:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:43:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 176 [2022-07-21 09:43:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:02,869 INFO L225 Difference]: With dead ends: 353 [2022-07-21 09:43:02,869 INFO L226 Difference]: Without dead ends: 286 [2022-07-21 09:43:02,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 202 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:43:02,870 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 10 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:02,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 555 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-07-21 09:43:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-21 09:43:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2022-07-21 09:43:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 211 states have (on average 1.042654028436019) internal successors, (220), 215 states have internal predecessors, (220), 41 states have call successors, (41), 30 states have call predecessors, (41), 31 states have return successors, (42), 38 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-21 09:43:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 303 transitions. [2022-07-21 09:43:02,892 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 303 transitions. Word has length 176 [2022-07-21 09:43:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:02,892 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 303 transitions. [2022-07-21 09:43:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:43:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 303 transitions. [2022-07-21 09:43:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 09:43:02,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:02,894 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:02,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:43:03,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-21 09:43:03,119 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:03,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:03,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1929317785, now seen corresponding path program 2 times [2022-07-21 09:43:03,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:03,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173581076] [2022-07-21 09:43:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:03,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:43:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:43:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 09:43:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 09:43:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:43:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:43:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:43:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:43:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:43:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 09:43:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:43:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:43:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:43:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 09:43:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:43:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 09:43:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 09:43:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-21 09:43:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 52 proven. 11 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-21 09:43:04,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:04,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173581076] [2022-07-21 09:43:04,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173581076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:04,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571210665] [2022-07-21 09:43:04,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:43:04,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:04,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:04,409 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) [2022-07-21 09:43:04,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:43:04,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:43:04,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:43:04,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 138 conjunts are in the unsatisfiable core [2022-07-21 09:43:04,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:04,969 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 [2022-07-21 09:43:09,116 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:09,117 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 15 treesize of output 21 [2022-07-21 09:43:09,155 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 [2022-07-21 09:43:09,174 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-21 09:43:09,174 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 27 [2022-07-21 09:43:11,497 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_22| Int) (|v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_22| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_22|) (+ 8 |v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_22|)) 0))) (exists ((|v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_22| Int) (|v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_22| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_22|) (+ 8 |v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_22|)) 0)))) is different from true [2022-07-21 09:43:13,583 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_23| Int) (|v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_23| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_23|) (+ 8 |v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_23|)) 0))) (exists ((|v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_23| Int) (|v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_23| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_23|) (+ 8 |v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_23|)) 0)))) is different from true [2022-07-21 09:43:14,853 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_13| Int) (|v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_24| Int) (|v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_24| Int)) (let ((.cse1 (+ 8 |v_aws_byte_cursor_left_trim_pred_#in~source.offset_BEFORE_CALL_24|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_24|) .cse1))) (and (= (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_13|) 8) .cse0) (or (not (= .cse0 0)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_left_trim_pred_#in~source.base_BEFORE_CALL_24|) .cse1) 0))))))) is different from true [2022-07-21 09:43:17,980 INFO L356 Elim1Store]: treesize reduction 73, result has 20.7 percent of original size [2022-07-21 09:43:17,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 52 [2022-07-21 09:43:17,992 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:17,992 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 32 [2022-07-21 09:43:17,996 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 [2022-07-21 09:43:31,889 INFO L356 Elim1Store]: treesize reduction 149, result has 11.3 percent of original size [2022-07-21 09:43:31,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 52 [2022-07-21 09:43:31,903 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:31,903 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 32 [2022-07-21 09:43:31,960 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 [2022-07-21 09:43:35,250 INFO L356 Elim1Store]: treesize reduction 149, result has 11.3 percent of original size [2022-07-21 09:43:35,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 52 [2022-07-21 09:43:35,263 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:35,264 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 32 [2022-07-21 09:43:35,272 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 [2022-07-21 09:43:38,420 INFO L356 Elim1Store]: treesize reduction 149, result has 11.3 percent of original size [2022-07-21 09:43:38,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 52 [2022-07-21 09:43:38,433 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:38,433 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 32 [2022-07-21 09:43:38,470 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 [2022-07-21 09:43:41,696 INFO L356 Elim1Store]: treesize reduction 149, result has 11.3 percent of original size [2022-07-21 09:43:41,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 52 [2022-07-21 09:43:41,708 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:41,708 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 32 [2022-07-21 09:43:41,741 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 [2022-07-21 09:43:46,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:43:46,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:43:46,979 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-21 09:43:46,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 42 [2022-07-21 09:43:46,995 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:43:46,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 34 [2022-07-21 09:43:47,003 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 [2022-07-21 09:43:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 71 proven. 106 refuted. 7 times theorem prover too weak. 54 trivial. 12 not checked. [2022-07-21 09:43:48,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:43:49,265 INFO L356 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-07-21 09:43:49,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2022-07-21 09:43:49,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571210665] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:43:49,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:43:49,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 39] total 60 [2022-07-21 09:43:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495973980] [2022-07-21 09:43:49,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:43:49,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-07-21 09:43:49,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-07-21 09:43:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3979, Unknown=15, NotChecked=390, Total=4692 [2022-07-21 09:43:49,412 INFO L87 Difference]: Start difference. First operand 284 states and 303 transitions. Second operand has 60 states, 55 states have (on average 3.090909090909091) internal successors, (170), 54 states have internal predecessors, (170), 25 states have call successors, (41), 10 states have call predecessors, (41), 13 states have return successors, (40), 23 states have call predecessors, (40), 24 states have call successors, (40)