./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_eq_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 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:17:58,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:17:58,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:17:58,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:17:58,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:17:58,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:17:58,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:17:58,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:17:58,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:17:58,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:17:58,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:17:58,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:17:58,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:17:58,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:17:58,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:17:58,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:17:58,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:17:58,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:17:58,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:17:58,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:17:58,473 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:17:58,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:17:58,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:17:58,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:17:58,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:17:58,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:17:58,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:17:58,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:17:58,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:17:58,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:17:58,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:17:58,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:17:58,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:17:58,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:17:58,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:17:58,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:17:58,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:17:58,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:17:58,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:17:58,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:17:58,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:17:58,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:17:58,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:17:58,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:17:58,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:17:58,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:17:58,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:17:58,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:17:58,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:17:58,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:17:58,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:17:58,517 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:17:58,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:17:58,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:17:58,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:17:58,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:17:58,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:17:58,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:17:58,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:17:58,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:17:58,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:17:58,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:17:58,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:17:58,520 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:17:58,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:17:58,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:17:58,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2022-07-22 22:17:58,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:17:58,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:17:58,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:17:58,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:17:58,747 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:17:58,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2022-07-22 22:17:58,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768dbc88e/0ce4f0dcc46e4aac9647b43b52218eed/FLAG1573d24d4 [2022-07-22 22:17:59,412 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:17:59,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2022-07-22 22:17:59,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768dbc88e/0ce4f0dcc46e4aac9647b43b52218eed/FLAG1573d24d4 [2022-07-22 22:17:59,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768dbc88e/0ce4f0dcc46e4aac9647b43b52218eed [2022-07-22 22:17:59,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:17:59,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:17:59,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:17:59,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:17:59,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:17:59,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:17:59" (1/1) ... [2022-07-22 22:17:59,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a63e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:17:59, skipping insertion in model container [2022-07-22 22:17:59,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:17:59" (1/1) ... [2022-07-22 22:17:59,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:17:59,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:17:59,863 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_eq_harness.i[4492,4505] [2022-07-22 22:17:59,868 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_eq_harness.i[4552,4565] [2022-07-22 22:18:00,370 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,371 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,372 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,379 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,380 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,382 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,382 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:18:00,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:18:00,612 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:18:00,613 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:18:00,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:18:00,618 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:18:00,619 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:18:00,620 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:18:00,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:18:00,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:18:00,710 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:18:00,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:18:00,906 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:18:00,922 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_eq_harness.i[4492,4505] [2022-07-22 22:18:00,924 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_eq_harness.i[4552,4565] [2022-07-22 22:18:00,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,954 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,954 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,955 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,963 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,964 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,965 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,965 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:00,993 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:18:00,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:18:00,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:18:00,995 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:18:00,995 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:18:00,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:18:00,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:18:00,996 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:18:00,997 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:18:00,997 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:18:01,014 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:18:01,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:01,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:18:01,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:18:01,237 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:18:01,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01 WrapperNode [2022-07-22 22:18:01,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:18:01,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:18:01,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:18:01,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:18:01,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,391 INFO L137 Inliner]: procedures = 691, calls = 2650, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 873 [2022-07-22 22:18:01,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:18:01,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:18:01,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:18:01,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:18:01,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:18:01,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:18:01,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:18:01,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:18:01,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (1/1) ... [2022-07-22 22:18:01,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:18:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:01,528 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) [2022-07-22 22:18:01,546 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 [2022-07-22 22:18:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-22 22:18:01,556 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-22 22:18:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-22 22:18:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:18:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:18:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:18:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:18:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-07-22 22:18:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-07-22 22:18:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:18:01,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:18:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:18:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:18:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-22 22:18:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-22 22:18:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:18:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:18:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:18:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:18:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:18:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:18:01,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:18:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:18:01,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:18:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:18:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:18:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-07-22 22:18:01,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-07-22 22:18:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:18:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:18:01,561 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:18:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:18:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-07-22 22:18:01,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-07-22 22:18:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:18:01,754 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:18:01,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:18:02,402 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:18:02,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:18:02,410 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 22:18:02,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:18:02 BoogieIcfgContainer [2022-07-22 22:18:02,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:18:02,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:18:02,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:18:02,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:18:02,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:17:59" (1/3) ... [2022-07-22 22:18:02,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29531bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:18:02, skipping insertion in model container [2022-07-22 22:18:02,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:18:01" (2/3) ... [2022-07-22 22:18:02,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29531bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:18:02, skipping insertion in model container [2022-07-22 22:18:02,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:18:02" (3/3) ... [2022-07-22 22:18:02,419 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2022-07-22 22:18:02,429 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:18:02,429 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:18:02,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:18:02,491 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@56d11f5e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31c6bb76 [2022-07-22 22:18:02,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:18:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-22 22:18:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:18:02,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:02,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:02,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1846687754, now seen corresponding path program 1 times [2022-07-22 22:18:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:02,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413085483] [2022-07-22 22:18:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:18:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:18:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:18:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:18:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:18:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:18:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:18:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:18:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 22:18:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:18:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:18:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 22:18:03,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:03,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413085483] [2022-07-22 22:18:03,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413085483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:18:03,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:18:03,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:18:03,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439435489] [2022-07-22 22:18:03,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:18:03,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:18:03,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:18:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:18:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:18:03,284 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:18:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:03,537 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2022-07-22 22:18:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:18:03,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2022-07-22 22:18:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:03,546 INFO L225 Difference]: With dead ends: 267 [2022-07-22 22:18:03,546 INFO L226 Difference]: Without dead ends: 131 [2022-07-22 22:18:03,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:18:03,551 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 102 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:03,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 196 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:18:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-22 22:18:03,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2022-07-22 22:18:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-22 22:18:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 171 transitions. [2022-07-22 22:18:03,588 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 171 transitions. Word has length 102 [2022-07-22 22:18:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:03,588 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 171 transitions. [2022-07-22 22:18:03,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:18:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 171 transitions. [2022-07-22 22:18:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:18:03,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:03,592 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:03,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:18:03,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:03,593 INFO L85 PathProgramCache]: Analyzing trace with hash -192509010, now seen corresponding path program 1 times [2022-07-22 22:18:03,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843030975] [2022-07-22 22:18:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:03,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:18:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:18:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:18:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:18:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:18:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:18:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:18:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:18:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 22:18:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:18:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:18:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:18:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:03,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843030975] [2022-07-22 22:18:03,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843030975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:18:03,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893022390] [2022-07-22 22:18:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:03,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:03,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:03,952 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) [2022-07-22 22:18:03,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:18:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:04,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:18:04,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:18:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-22 22:18:04,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:18:04,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893022390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:18:04,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:18:04,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-22 22:18:04,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778889026] [2022-07-22 22:18:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:18:04,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:18:04,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:18:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:18:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:18:04,547 INFO L87 Difference]: Start difference. First operand 128 states and 171 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 22:18:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:04,700 INFO L93 Difference]: Finished difference Result 252 states and 341 transitions. [2022-07-22 22:18:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:18:04,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2022-07-22 22:18:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:04,702 INFO L225 Difference]: With dead ends: 252 [2022-07-22 22:18:04,702 INFO L226 Difference]: Without dead ends: 131 [2022-07-22 22:18:04,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:18:04,704 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:04,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 337 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:18:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-22 22:18:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-22 22:18:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2022-07-22 22:18:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2022-07-22 22:18:04,717 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 102 [2022-07-22 22:18:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:04,717 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2022-07-22 22:18:04,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 22:18:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2022-07-22 22:18:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 22:18:04,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:04,719 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:04,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 22:18:04,937 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 [2022-07-22 22:18:04,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash -49851437, now seen corresponding path program 1 times [2022-07-22 22:18:04,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:04,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208971464] [2022-07-22 22:18:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:04,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:18:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:18:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:18:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:18:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:18:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:18:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:18:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:18:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:18:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:18:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:18:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-22 22:18:05,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:05,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208971464] [2022-07-22 22:18:05,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208971464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:18:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451916473] [2022-07-22 22:18:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:05,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:05,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:05,242 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) [2022-07-22 22:18:05,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:18:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:05,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:18:05,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:18:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 22:18:05,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:18:05,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451916473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:18:05,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:18:05,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-22 22:18:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059387554] [2022-07-22 22:18:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:18:05,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:18:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:18:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:18:05,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:18:05,711 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:18:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:05,914 INFO L93 Difference]: Finished difference Result 212 states and 290 transitions. [2022-07-22 22:18:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:18:05,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 104 [2022-07-22 22:18:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:05,916 INFO L225 Difference]: With dead ends: 212 [2022-07-22 22:18:05,916 INFO L226 Difference]: Without dead ends: 131 [2022-07-22 22:18:05,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:18:05,917 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 206 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:05,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 537 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:18:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-22 22:18:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-22 22:18:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2022-07-22 22:18:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 177 transitions. [2022-07-22 22:18:05,926 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 177 transitions. Word has length 104 [2022-07-22 22:18:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 177 transitions. [2022-07-22 22:18:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:18:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 177 transitions. [2022-07-22 22:18:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 22:18:05,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:05,929 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:05,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:18:06,150 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 [2022-07-22 22:18:06,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:06,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:06,151 INFO L85 PathProgramCache]: Analyzing trace with hash 160212765, now seen corresponding path program 2 times [2022-07-22 22:18:06,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:06,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288100960] [2022-07-22 22:18:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:06,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:18:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:18:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:18:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:18:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:18:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:18:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:18:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:18:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:18:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:18:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:18:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 22:18:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288100960] [2022-07-22 22:18:06,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288100960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:18:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001109980] [2022-07-22 22:18:06,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:18:06,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:06,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:06,441 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) [2022-07-22 22:18:06,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:18:06,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:18:06,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:18:06,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 22:18:06,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:18:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 22:18:06,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:18:06,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001109980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:18:06,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:18:06,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-22 22:18:06,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321110816] [2022-07-22 22:18:06,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:18:06,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:18:06,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:18:06,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:18:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:18:06,825 INFO L87 Difference]: Start difference. First operand 131 states and 177 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 22:18:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:06,879 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2022-07-22 22:18:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:18:06,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 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 108 [2022-07-22 22:18:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:06,881 INFO L225 Difference]: With dead ends: 143 [2022-07-22 22:18:06,881 INFO L226 Difference]: Without dead ends: 141 [2022-07-22 22:18:06,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:18:06,882 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 16 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:06,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1166 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:18:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-22 22:18:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2022-07-22 22:18:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 41 states have call successors, (41), 12 states have call predecessors, (41), 14 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2022-07-22 22:18:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2022-07-22 22:18:06,891 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 108 [2022-07-22 22:18:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:06,891 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2022-07-22 22:18:06,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 22:18:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2022-07-22 22:18:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 22:18:06,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:06,893 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:06,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:18:07,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:07,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1574940187, now seen corresponding path program 1 times [2022-07-22 22:18:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:07,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136739698] [2022-07-22 22:18:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:18:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:18:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:18:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:18:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:18:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:18:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:18:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:18:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:18:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:18:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:18:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 22:18:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:07,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136739698] [2022-07-22 22:18:07,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136739698] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:18:07,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253281118] [2022-07-22 22:18:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:07,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:07,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:07,386 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) [2022-07-22 22:18:07,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:18:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:07,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:18:07,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:18:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 22:18:07,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:18:07,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253281118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:18:07,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:18:07,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-22 22:18:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938713168] [2022-07-22 22:18:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:18:07,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:18:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:18:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:18:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:18:07,878 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:18:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:08,069 INFO L93 Difference]: Finished difference Result 245 states and 337 transitions. [2022-07-22 22:18:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:18:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 112 [2022-07-22 22:18:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:08,071 INFO L225 Difference]: With dead ends: 245 [2022-07-22 22:18:08,071 INFO L226 Difference]: Without dead ends: 137 [2022-07-22 22:18:08,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:18:08,073 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 205 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:08,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 540 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:18:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-22 22:18:08,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-07-22 22:18:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2022-07-22 22:18:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2022-07-22 22:18:08,083 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 112 [2022-07-22 22:18:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:08,083 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2022-07-22 22:18:08,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:18:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2022-07-22 22:18:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:18:08,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:08,085 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:08,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:18:08,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:08,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 660367434, now seen corresponding path program 1 times [2022-07-22 22:18:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:08,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992386769] [2022-07-22 22:18:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:08,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:18:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:18:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:18:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:18:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:18:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:18:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:18:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:18:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:18:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:18:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:18:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 22:18:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:08,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992386769] [2022-07-22 22:18:08,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992386769] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:18:08,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639648955] [2022-07-22 22:18:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:08,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:08,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:08,814 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) [2022-07-22 22:18:08,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:18:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:09,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 129 conjunts are in the unsatisfiable core [2022-07-22 22:18:09,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:18:09,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:18:09,599 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-22 22:18:09,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-07-22 22:18:10,580 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:18:10,581 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 35 treesize of output 15 [2022-07-22 22:18:10,584 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 9 treesize of output 3 [2022-07-22 22:18:10,587 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 9 treesize of output 3 [2022-07-22 22:18:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 22:18:10,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:18:25,641 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:18:35,872 WARN L233 SmtUtils]: Spent 9.71s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:18:40,252 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 64 treesize of output 52 [2022-07-22 22:18:40,257 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 52 treesize of output 40 [2022-07-22 22:19:44,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639648955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:19:44,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:19:44,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24] total 34 [2022-07-22 22:19:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583155998] [2022-07-22 22:19:44,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:19:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 22:19:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:19:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 22:19:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2345, Unknown=20, NotChecked=0, Total=2550 [2022-07-22 22:19:44,698 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 34 states, 29 states have (on average 4.0) internal successors, (116), 30 states have internal predecessors, (116), 13 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 9 states have call predecessors, (34), 13 states have call successors, (34) [2022-07-22 22:19:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:19:58,027 INFO L93 Difference]: Finished difference Result 402 states and 549 transitions. [2022-07-22 22:19:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-22 22:19:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 4.0) internal successors, (116), 30 states have internal predecessors, (116), 13 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 9 states have call predecessors, (34), 13 states have call successors, (34) Word has length 114 [2022-07-22 22:19:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:19:58,029 INFO L225 Difference]: With dead ends: 402 [2022-07-22 22:19:58,029 INFO L226 Difference]: Without dead ends: 307 [2022-07-22 22:19:58,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 181 SyntacticMatches, 10 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 103.1s TimeCoverageRelationStatistics Valid=864, Invalid=8814, Unknown=24, NotChecked=0, Total=9702 [2022-07-22 22:19:58,032 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 419 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 5681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 601 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:19:58,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1415 Invalid, 5681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 4773 Invalid, 0 Unknown, 601 Unchecked, 3.3s Time] [2022-07-22 22:19:58,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-22 22:19:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 266. [2022-07-22 22:19:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 169 states have internal predecessors, (193), 73 states have call successors, (73), 24 states have call predecessors, (73), 27 states have return successors, (86), 72 states have call predecessors, (86), 71 states have call successors, (86) [2022-07-22 22:19:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 352 transitions. [2022-07-22 22:19:58,054 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 352 transitions. Word has length 114 [2022-07-22 22:19:58,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:19:58,054 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 352 transitions. [2022-07-22 22:19:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 4.0) internal successors, (116), 30 states have internal predecessors, (116), 13 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 9 states have call predecessors, (34), 13 states have call successors, (34) [2022-07-22 22:19:58,055 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 352 transitions. [2022-07-22 22:19:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 22:19:58,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:19:58,059 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:19:58,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:19:58,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:19:58,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:19:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:19:58,277 INFO L85 PathProgramCache]: Analyzing trace with hash -448097721, now seen corresponding path program 1 times [2022-07-22 22:19:58,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:19:58,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613394475] [2022-07-22 22:19:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:19:58,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:19:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:19:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:19:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:19:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:19:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:19:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:19:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:19:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:19:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:19:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:19:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:19:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 22:19:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:19:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:19:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 22:19:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:19:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:19:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:19:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-22 22:19:58,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:19:58,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613394475] [2022-07-22 22:19:58,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613394475] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:19:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044402529] [2022-07-22 22:19:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:19:58,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:19:58,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:19:58,798 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) [2022-07-22 22:19:58,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:19:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:19:59,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:19:59,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:19:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 22:19:59,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:19:59,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044402529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:19:59,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:19:59,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-07-22 22:19:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907059335] [2022-07-22 22:19:59,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:19:59,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:19:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:19:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:19:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:19:59,283 INFO L87 Difference]: Start difference. First operand 266 states and 352 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 22:19:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:19:59,421 INFO L93 Difference]: Finished difference Result 363 states and 488 transitions. [2022-07-22 22:19:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:19:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2022-07-22 22:19:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:19:59,424 INFO L225 Difference]: With dead ends: 363 [2022-07-22 22:19:59,425 INFO L226 Difference]: Without dead ends: 276 [2022-07-22 22:19:59,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:19:59,426 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:19:59,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1267 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:19:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-22 22:19:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 271. [2022-07-22 22:19:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 169 states have (on average 1.165680473372781) internal successors, (197), 174 states have internal predecessors, (197), 73 states have call successors, (73), 24 states have call predecessors, (73), 28 states have return successors, (94), 72 states have call predecessors, (94), 71 states have call successors, (94) [2022-07-22 22:19:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 364 transitions. [2022-07-22 22:19:59,460 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 364 transitions. Word has length 125 [2022-07-22 22:19:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:19:59,461 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 364 transitions. [2022-07-22 22:19:59,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 22:19:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 364 transitions. [2022-07-22 22:19:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:19:59,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:19:59,465 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:19:59,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:19:59,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:19:59,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:19:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:19:59,686 INFO L85 PathProgramCache]: Analyzing trace with hash -276342452, now seen corresponding path program 1 times [2022-07-22 22:19:59,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:19:59,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808922215] [2022-07-22 22:19:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:19:59,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:19:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:20:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:20:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:20:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:20:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:20:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:20:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:20:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:20:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 22:20:00,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:00,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808922215] [2022-07-22 22:20:00,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808922215] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:00,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461974108] [2022-07-22 22:20:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:00,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:00,400 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) [2022-07-22 22:20:00,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:20:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:00,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 22:20:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:20:00,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:20:00,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461974108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:20:00,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:20:00,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 24 [2022-07-22 22:20:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302305617] [2022-07-22 22:20:00,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:20:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:20:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:20:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:20:00,942 INFO L87 Difference]: Start difference. First operand 271 states and 364 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:20:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:01,110 INFO L93 Difference]: Finished difference Result 454 states and 624 transitions. [2022-07-22 22:20:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:20:01,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2022-07-22 22:20:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:01,112 INFO L225 Difference]: With dead ends: 454 [2022-07-22 22:20:01,112 INFO L226 Difference]: Without dead ends: 271 [2022-07-22 22:20:01,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:20:01,113 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 17 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:01,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 597 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-07-22 22:20:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-22 22:20:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-07-22 22:20:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 169 states have (on average 1.1538461538461537) internal successors, (195), 174 states have internal predecessors, (195), 73 states have call successors, (73), 24 states have call predecessors, (73), 28 states have return successors, (94), 72 states have call predecessors, (94), 71 states have call successors, (94) [2022-07-22 22:20:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2022-07-22 22:20:01,127 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 127 [2022-07-22 22:20:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:01,127 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2022-07-22 22:20:01,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:20:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2022-07-22 22:20:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:20:01,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:01,129 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:20:01,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:20:01,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:01,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:01,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 284357326, now seen corresponding path program 1 times [2022-07-22 22:20:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:01,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886990044] [2022-07-22 22:20:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:20:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:20:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:20:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:20:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:20:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:20:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:20:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:20:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 22:20:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:01,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886990044] [2022-07-22 22:20:01,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886990044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:01,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847239393] [2022-07-22 22:20:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:01,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:01,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:01,928 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) [2022-07-22 22:20:01,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:20:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:02,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 22:20:02,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:02,641 INFO L356 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2022-07-22 22:20:02,641 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 2 case distinctions, treesize of input 40 treesize of output 45 [2022-07-22 22:20:02,710 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:20:02,711 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 44 treesize of output 24 [2022-07-22 22:20:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 76 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-22 22:20:02,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:20:03,111 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 26 treesize of output 14 [2022-07-22 22:20:03,142 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:20:03,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-22 22:20:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-22 22:20:03,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847239393] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:20:03,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:20:03,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 11] total 31 [2022-07-22 22:20:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269028318] [2022-07-22 22:20:03,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:20:03,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 22:20:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 22:20:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-07-22 22:20:03,163 INFO L87 Difference]: Start difference. First operand 271 states and 362 transitions. Second operand has 31 states, 28 states have (on average 4.357142857142857) internal successors, (122), 29 states have internal predecessors, (122), 15 states have call successors, (45), 7 states have call predecessors, (45), 10 states have return successors, (44), 12 states have call predecessors, (44), 15 states have call successors, (44) [2022-07-22 22:20:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:09,384 INFO L93 Difference]: Finished difference Result 560 states and 793 transitions. [2022-07-22 22:20:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 22:20:09,384 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.357142857142857) internal successors, (122), 29 states have internal predecessors, (122), 15 states have call successors, (45), 7 states have call predecessors, (45), 10 states have return successors, (44), 12 states have call predecessors, (44), 15 states have call successors, (44) Word has length 127 [2022-07-22 22:20:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:09,386 INFO L225 Difference]: With dead ends: 560 [2022-07-22 22:20:09,386 INFO L226 Difference]: Without dead ends: 420 [2022-07-22 22:20:09,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 274 SyntacticMatches, 9 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=272, Invalid=2178, Unknown=0, NotChecked=0, Total=2450 [2022-07-22 22:20:09,388 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 374 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 4516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 500 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:09,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 844 Invalid, 4516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 3494 Invalid, 0 Unknown, 500 Unchecked, 2.3s Time] [2022-07-22 22:20:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-07-22 22:20:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 328. [2022-07-22 22:20:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 202 states have (on average 1.1485148514851484) internal successors, (232), 205 states have internal predecessors, (232), 96 states have call successors, (96), 27 states have call predecessors, (96), 29 states have return successors, (122), 95 states have call predecessors, (122), 94 states have call successors, (122) [2022-07-22 22:20:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 450 transitions. [2022-07-22 22:20:09,409 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 450 transitions. Word has length 127 [2022-07-22 22:20:09,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:09,423 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 450 transitions. [2022-07-22 22:20:09,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.357142857142857) internal successors, (122), 29 states have internal predecessors, (122), 15 states have call successors, (45), 7 states have call predecessors, (45), 10 states have return successors, (44), 12 states have call predecessors, (44), 15 states have call successors, (44) [2022-07-22 22:20:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 450 transitions. [2022-07-22 22:20:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:20:09,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:09,425 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:20:09,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:20:09,653 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,SelfDestructingSolverStorable8 [2022-07-22 22:20:09,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2040741793, now seen corresponding path program 1 times [2022-07-22 22:20:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:09,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179737880] [2022-07-22 22:20:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:20:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:20:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:20:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:20:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:20:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:20:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:20:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:20:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:20:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:20:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 22:20:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:09,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179737880] [2022-07-22 22:20:09,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179737880] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:09,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711291164] [2022-07-22 22:20:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:09,960 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) [2022-07-22 22:20:09,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:20:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:10,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:20:10,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 22:20:10,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:20:10,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711291164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:20:10,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:20:10,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-22 22:20:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105246320] [2022-07-22 22:20:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:20:10,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:20:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:20:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:20:10,409 INFO L87 Difference]: Start difference. First operand 328 states and 450 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 22:20:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:10,559 INFO L93 Difference]: Finished difference Result 490 states and 673 transitions. [2022-07-22 22:20:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:20:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2022-07-22 22:20:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:10,561 INFO L225 Difference]: With dead ends: 490 [2022-07-22 22:20:10,561 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 22:20:10,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:20:10,562 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 11 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:10,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1253 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:20:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 22:20:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 328. [2022-07-22 22:20:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 202 states have (on average 1.1485148514851484) internal successors, (232), 205 states have internal predecessors, (232), 96 states have call successors, (96), 27 states have call predecessors, (96), 29 states have return successors, (120), 95 states have call predecessors, (120), 94 states have call successors, (120) [2022-07-22 22:20:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 448 transitions. [2022-07-22 22:20:10,579 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 448 transitions. Word has length 124 [2022-07-22 22:20:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:10,580 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 448 transitions. [2022-07-22 22:20:10,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 22:20:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 448 transitions. [2022-07-22 22:20:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:20:10,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:10,581 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:20:10,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 22:20:10,799 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,SelfDestructingSolverStorable9 [2022-07-22 22:20:10,799 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -153440338, now seen corresponding path program 2 times [2022-07-22 22:20:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:10,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887403605] [2022-07-22 22:20:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:20:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:20:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:20:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:20:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:20:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:20:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:20:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:20:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:20:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-22 22:20:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887403605] [2022-07-22 22:20:11,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887403605] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829795202] [2022-07-22 22:20:11,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:20:11,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:11,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:11,461 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) [2022-07-22 22:20:11,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:20:12,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:20:12,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:20:12,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 22:20:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:12,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:20:12,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 22:20:12,736 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 [2022-07-22 22:20:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-22 22:20:12,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:20:12,971 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_961 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| v_ArrVal_961) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) is different from false [2022-07-22 22:20:12,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829795202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:12,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:20:12,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2022-07-22 22:20:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28040082] [2022-07-22 22:20:12,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:20:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:20:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:20:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=727, Unknown=1, NotChecked=54, Total=870 [2022-07-22 22:20:12,989 INFO L87 Difference]: Start difference. First operand 328 states and 448 transitions. Second operand has 27 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 11 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) [2022-07-22 22:20:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:17,326 INFO L93 Difference]: Finished difference Result 682 states and 1001 transitions. [2022-07-22 22:20:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 22:20:17,326 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 11 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) Word has length 127 [2022-07-22 22:20:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:17,338 INFO L225 Difference]: With dead ends: 682 [2022-07-22 22:20:17,338 INFO L226 Difference]: Without dead ends: 521 [2022-07-22 22:20:17,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=316, Invalid=2443, Unknown=1, NotChecked=102, Total=2862 [2022-07-22 22:20:17,340 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 421 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:17,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 915 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 4621 Invalid, 0 Unknown, 377 Unchecked, 3.4s Time] [2022-07-22 22:20:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-22 22:20:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 387. [2022-07-22 22:20:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 231 states have (on average 1.147186147186147) internal successors, (265), 232 states have internal predecessors, (265), 126 states have call successors, (126), 29 states have call predecessors, (126), 29 states have return successors, (160), 125 states have call predecessors, (160), 124 states have call successors, (160) [2022-07-22 22:20:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 551 transitions. [2022-07-22 22:20:17,374 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 551 transitions. Word has length 127 [2022-07-22 22:20:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:17,374 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 551 transitions. [2022-07-22 22:20:17,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 11 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) [2022-07-22 22:20:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 551 transitions. [2022-07-22 22:20:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 22:20:17,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:17,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:20:17,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:20:17,595 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,SelfDestructingSolverStorable10 [2022-07-22 22:20:17,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2001210328, now seen corresponding path program 2 times [2022-07-22 22:20:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:17,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018137794] [2022-07-22 22:20:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:20:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:20:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:20:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:20:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:20:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:20:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:20:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:20:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018137794] [2022-07-22 22:20:18,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018137794] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799996255] [2022-07-22 22:20:18,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:20:18,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:18,027 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) [2022-07-22 22:20:18,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:20:18,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:20:18,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:20:19,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 22:20:19,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:19,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:20:19,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:20:19,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2022-07-22 22:20:20,052 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_12| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_10|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_12|) 0)) (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_12| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_10|)))) is different from true [2022-07-22 22:20:21,015 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_13| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_13|) 0)))) is different from true [2022-07-22 22:20:21,960 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_14| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_14| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_12|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_12|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_14|) 0)))) is different from true [2022-07-22 22:20:22,901 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_15| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_15| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_13|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_13|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_15|) 0)))) is different from true [2022-07-22 22:20:22,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-07-22 22:20:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 65 proven. 0 refuted. 16 times theorem prover too weak. 31 trivial. 11 not checked. [2022-07-22 22:20:23,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:20:23,393 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 31 treesize of output 27 [2022-07-22 22:20:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 22:20:23,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799996255] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:23,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:20:23,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14, 14] total 31 [2022-07-22 22:20:23,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749540670] [2022-07-22 22:20:23,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:20:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:20:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:20:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=633, Unknown=4, NotChecked=212, Total=930 [2022-07-22 22:20:23,459 INFO L87 Difference]: Start difference. First operand 387 states and 551 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2022-07-22 22:20:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:23,890 INFO L93 Difference]: Finished difference Result 612 states and 921 transitions. [2022-07-22 22:20:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:20:23,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 126 [2022-07-22 22:20:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:23,893 INFO L225 Difference]: With dead ends: 612 [2022-07-22 22:20:23,893 INFO L226 Difference]: Without dead ends: 500 [2022-07-22 22:20:23,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 262 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=97, Invalid=785, Unknown=4, NotChecked=236, Total=1122 [2022-07-22 22:20:23,894 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 86 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:23,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1369 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 397 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-07-22 22:20:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-22 22:20:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 411. [2022-07-22 22:20:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 242 states have (on average 1.1446280991735538) internal successors, (277), 245 states have internal predecessors, (277), 137 states have call successors, (137), 30 states have call predecessors, (137), 31 states have return successors, (180), 135 states have call predecessors, (180), 135 states have call successors, (180) [2022-07-22 22:20:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 594 transitions. [2022-07-22 22:20:23,946 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 594 transitions. Word has length 126 [2022-07-22 22:20:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:23,946 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 594 transitions. [2022-07-22 22:20:23,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 9 states have internal predecessors, (45), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2022-07-22 22:20:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 594 transitions. [2022-07-22 22:20:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:20:23,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:23,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:20:23,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:20:24,156 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,SelfDestructingSolverStorable11 [2022-07-22 22:20:24,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash -966185318, now seen corresponding path program 1 times [2022-07-22 22:20:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:24,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116308539] [2022-07-22 22:20:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:20:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:20:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:20:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:20:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:20:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:20:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:20:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 22:20:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:24,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116308539] [2022-07-22 22:20:24,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116308539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:24,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800274967] [2022-07-22 22:20:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:24,500 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) [2022-07-22 22:20:24,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:20:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:24,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-22 22:20:24,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:25,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:20:25,166 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-22 22:20:25,166 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 1 case distinctions, treesize of input 42 treesize of output 37 [2022-07-22 22:20:25,708 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:20:25,708 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 40 treesize of output 20 [2022-07-22 22:20:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 46 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:20:25,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:20:28,321 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 31 treesize of output 19 [2022-07-22 22:20:28,379 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:20:28,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-07-22 22:20:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 22:20:28,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800274967] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:20:28,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:20:28,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 13] total 31 [2022-07-22 22:20:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144294618] [2022-07-22 22:20:28,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:20:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 22:20:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 22:20:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=842, Unknown=1, NotChecked=0, Total=930 [2022-07-22 22:20:28,399 INFO L87 Difference]: Start difference. First operand 411 states and 594 transitions. Second operand has 31 states, 28 states have (on average 4.428571428571429) internal successors, (124), 29 states have internal predecessors, (124), 16 states have call successors, (45), 7 states have call predecessors, (45), 8 states have return successors, (44), 13 states have call predecessors, (44), 16 states have call successors, (44) [2022-07-22 22:20:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:32,240 INFO L93 Difference]: Finished difference Result 965 states and 1503 transitions. [2022-07-22 22:20:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-22 22:20:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.428571428571429) internal successors, (124), 29 states have internal predecessors, (124), 16 states have call successors, (45), 7 states have call predecessors, (45), 8 states have return successors, (44), 13 states have call predecessors, (44), 16 states have call successors, (44) Word has length 127 [2022-07-22 22:20:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:32,244 INFO L225 Difference]: With dead ends: 965 [2022-07-22 22:20:32,244 INFO L226 Difference]: Without dead ends: 853 [2022-07-22 22:20:32,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 254 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=288, Invalid=2903, Unknown=1, NotChecked=0, Total=3192 [2022-07-22 22:20:32,248 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 187 mSDsluCounter, 6134 mSDsCounter, 0 mSdLazyCounter, 4187 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 6660 SdHoareTripleChecker+Invalid, 5854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1442 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:32,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 6660 Invalid, 5854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4187 Invalid, 0 Unknown, 1442 Unchecked, 2.8s Time] [2022-07-22 22:20:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-07-22 22:20:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 477. [2022-07-22 22:20:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 282 states have (on average 1.1347517730496455) internal successors, (320), 287 states have internal predecessors, (320), 157 states have call successors, (157), 34 states have call predecessors, (157), 37 states have return successors, (214), 155 states have call predecessors, (214), 155 states have call successors, (214) [2022-07-22 22:20:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 691 transitions. [2022-07-22 22:20:32,300 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 691 transitions. Word has length 127 [2022-07-22 22:20:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:32,302 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 691 transitions. [2022-07-22 22:20:32,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.428571428571429) internal successors, (124), 29 states have internal predecessors, (124), 16 states have call successors, (45), 7 states have call predecessors, (45), 8 states have return successors, (44), 13 states have call predecessors, (44), 16 states have call successors, (44) [2022-07-22 22:20:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 691 transitions. [2022-07-22 22:20:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:20:32,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:32,304 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:20:32,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:20:32,525 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,SelfDestructingSolverStorable12 [2022-07-22 22:20:32,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:32,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1375009543, now seen corresponding path program 1 times [2022-07-22 22:20:32,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:32,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877746710] [2022-07-22 22:20:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:32,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:20:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:20:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:20:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:20:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:20:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:20:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:20:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:20:32,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:32,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877746710] [2022-07-22 22:20:32,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877746710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:32,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148091031] [2022-07-22 22:20:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:33,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:33,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:33,001 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) [2022-07-22 22:20:33,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:20:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:33,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-22 22:20:33,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:38,214 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset| 0) (let ((.cse0 (+ |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset| 8))) (or (not (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) .cse0) 0)) (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) .cse0) 0)))) (not (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base_BEFORE_CALL_53| Int)) (and (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base_BEFORE_CALL_53|) 8) 0)) (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base_BEFORE_CALL_53|) 0) 18446744073709551616) 0)))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base_BEFORE_CALL_53| Int)) (and (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base_BEFORE_CALL_53|) 8) 0)) (not (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base_BEFORE_CALL_53|) 0) 18446744073709551616) 0)))))) is different from true [2022-07-22 22:20:38,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:20:38,363 INFO L356 Elim1Store]: treesize reduction 136, result has 39.8 percent of original size [2022-07-22 22:20:38,364 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 6 case distinctions, treesize of input 70 treesize of output 143 [2022-07-22 22:20:38,373 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:20:38,373 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 177 treesize of output 173 [2022-07-22 22:20:38,377 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 173 treesize of output 169 [2022-07-22 22:20:38,387 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:20:38,388 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 186 treesize of output 182 [2022-07-22 22:20:38,400 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 [2022-07-22 22:20:45,403 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 101 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:20:45,487 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 31 treesize of output 19 [2022-07-22 22:20:45,493 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:20:45,493 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 35 treesize of output 19 [2022-07-22 22:20:45,495 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 13 [2022-07-22 22:20:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:20:45,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:20:46,480 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 9 treesize of output 3 [2022-07-22 22:20:46,482 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-22 22:20:46,484 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 23 treesize of output 15 [2022-07-22 22:20:46,691 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:20:46,691 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 51 treesize of output 54 [2022-07-22 22:20:46,700 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:20:46,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 42 [2022-07-22 22:20:46,822 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:20:46,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-07-22 22:20:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 22:20:46,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148091031] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:20:46,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:20:46,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 15] total 43 [2022-07-22 22:20:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186959775] [2022-07-22 22:20:46,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:20:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 22:20:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 22:20:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1531, Unknown=1, NotChecked=80, Total=1806 [2022-07-22 22:20:46,878 INFO L87 Difference]: Start difference. First operand 477 states and 691 transitions. Second operand has 43 states, 41 states have (on average 3.707317073170732) internal successors, (152), 40 states have internal predecessors, (152), 14 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (45), 13 states have call predecessors, (45), 14 states have call successors, (45) [2022-07-22 22:20:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:51,991 INFO L93 Difference]: Finished difference Result 795 states and 1123 transitions. [2022-07-22 22:20:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-22 22:20:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 3.707317073170732) internal successors, (152), 40 states have internal predecessors, (152), 14 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (45), 13 states have call predecessors, (45), 14 states have call successors, (45) Word has length 127 [2022-07-22 22:20:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:51,994 INFO L225 Difference]: With dead ends: 795 [2022-07-22 22:20:51,995 INFO L226 Difference]: Without dead ends: 597 [2022-07-22 22:20:51,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 264 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2380 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=1279, Invalid=6913, Unknown=2, NotChecked=178, Total=8372 [2022-07-22 22:20:51,998 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 469 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1160 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:51,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 2277 Invalid, 4955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3629 Invalid, 0 Unknown, 1160 Unchecked, 2.7s Time] [2022-07-22 22:20:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-07-22 22:20:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 493. [2022-07-22 22:20:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 298 states have (on average 1.1375838926174497) internal successors, (339), 301 states have internal predecessors, (339), 150 states have call successors, (150), 45 states have call predecessors, (150), 44 states have return successors, (192), 146 states have call predecessors, (192), 148 states have call successors, (192) [2022-07-22 22:20:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 681 transitions. [2022-07-22 22:20:52,065 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 681 transitions. Word has length 127 [2022-07-22 22:20:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:52,065 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 681 transitions. [2022-07-22 22:20:52,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 3.707317073170732) internal successors, (152), 40 states have internal predecessors, (152), 14 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (45), 13 states have call predecessors, (45), 14 states have call successors, (45) [2022-07-22 22:20:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 681 transitions. [2022-07-22 22:20:52,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 22:20:52,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:52,067 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:20:52,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:20:52,283 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,SelfDestructingSolverStorable13 [2022-07-22 22:20:52,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:52,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash -226410282, now seen corresponding path program 1 times [2022-07-22 22:20:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:52,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390421971] [2022-07-22 22:20:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:52,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:20:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:20:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:20:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:20:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:20:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:20:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 22:20:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:20:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:20:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-22 22:20:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:52,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390421971] [2022-07-22 22:20:52,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390421971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:20:52,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:20:52,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:20:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582470458] [2022-07-22 22:20:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:20:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:20:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:20:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:20:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:20:52,551 INFO L87 Difference]: Start difference. First operand 493 states and 681 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-07-22 22:20:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:20:53,104 INFO L93 Difference]: Finished difference Result 505 states and 693 transitions. [2022-07-22 22:20:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:20:53,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 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 125 [2022-07-22 22:20:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:20:53,107 INFO L225 Difference]: With dead ends: 505 [2022-07-22 22:20:53,107 INFO L226 Difference]: Without dead ends: 503 [2022-07-22 22:20:53,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:20:53,110 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 115 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:20:53,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 632 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:20:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-22 22:20:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2022-07-22 22:20:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 304 states have (on average 1.1348684210526316) internal successors, (345), 307 states have internal predecessors, (345), 151 states have call successors, (151), 47 states have call predecessors, (151), 46 states have return successors, (193), 147 states have call predecessors, (193), 149 states have call successors, (193) [2022-07-22 22:20:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 689 transitions. [2022-07-22 22:20:53,151 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 689 transitions. Word has length 125 [2022-07-22 22:20:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:20:53,151 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 689 transitions. [2022-07-22 22:20:53,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-07-22 22:20:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 689 transitions. [2022-07-22 22:20:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:20:53,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:20:53,154 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:20:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 22:20:53,154 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:20:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:20:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1654758303, now seen corresponding path program 3 times [2022-07-22 22:20:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:20:53,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738488510] [2022-07-22 22:20:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:20:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:20:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:20:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:20:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:20:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:20:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:20:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:20:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:20:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:20:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:20:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:20:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:20:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:20:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:20:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:20:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:20:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:20:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:20:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-22 22:20:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:20:54,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738488510] [2022-07-22 22:20:54,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738488510] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:20:54,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518254949] [2022-07-22 22:20:54,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:20:54,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:20:54,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:20:54,104 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) [2022-07-22 22:20:54,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:20:55,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 22:20:55,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:20:55,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2382 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-22 22:20:55,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:20:57,612 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_20| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_20|)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_20| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19|) |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_20|) 18446744073709551616) 0)) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_20| Int)) (not (= 0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_20|)))))) is different from true [2022-07-22 22:21:11,696 WARN L233 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:21:25,084 WARN L233 SmtUtils]: Spent 13.30s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:21:38,386 WARN L233 SmtUtils]: Spent 13.19s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:21:49,962 WARN L233 SmtUtils]: Spent 11.43s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:22:02,503 WARN L233 SmtUtils]: Spent 12.44s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:22:14,100 WARN L233 SmtUtils]: Spent 11.50s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:22:25,662 WARN L233 SmtUtils]: Spent 11.47s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)