./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_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 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:03:37,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:03:37,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:03:37,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:03:37,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:03:37,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:03:37,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:03:37,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:03:37,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:03:37,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:03:37,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:03:37,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:03:37,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:03:37,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:03:37,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:03:37,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:03:37,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:03:37,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:03:37,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:03:37,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:03:37,421 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:03:37,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:03:37,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:03:37,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:03:37,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:03:37,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:03:37,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:03:37,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:03:37,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:03:37,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:03:37,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:03:37,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:03:37,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:03:37,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:03:37,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:03:37,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:03:37,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:03:37,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:03:37,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:03:37,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:03:37,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:03:37,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:03:37,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:03:37,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:03:37,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:03:37,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:03:37,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:03:37,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:03:37,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:03:37,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:03:37,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:03:37,476 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:03:37,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:03:37,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:03:37,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:03:37,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:03:37,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:03:37,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:03:37,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:03:37,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:03:37,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:03:37,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:03:37,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:03:37,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:03:37,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:03:37,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:03:37,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:03:37,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:03:37,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:03:37,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:03:37,481 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:03:37,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:03:37,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:03:37,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a [2022-07-12 11:03:37,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:03:37,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:03:37,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:03:37,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:03:37,727 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:03:37,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2022-07-12 11:03:37,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aabc1d6f/bea8f7c0a2ba4dfc8f580179df2d4407/FLAGb90e2a85f [2022-07-12 11:03:38,404 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:03:38,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2022-07-12 11:03:38,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aabc1d6f/bea8f7c0a2ba4dfc8f580179df2d4407/FLAGb90e2a85f [2022-07-12 11:03:38,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9aabc1d6f/bea8f7c0a2ba4dfc8f580179df2d4407 [2022-07-12 11:03:38,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:03:38,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:03:38,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:03:38,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:03:38,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:03:38,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:03:38" (1/1) ... [2022-07-12 11:03:38,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33833965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:38, skipping insertion in model container [2022-07-12 11:03:38,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:03:38" (1/1) ... [2022-07-12 11:03:38,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:03:38,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:03:39,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4499,4512] [2022-07-12 11:03:39,026 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4559,4572] [2022-07-12 11:03:39,776 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,776 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,777 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,779 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,789 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,791 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:39,794 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,095 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:03:40,097 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:03:40,098 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:03:40,099 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:03:40,103 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:03:40,105 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:03:40,106 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:03:40,107 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:03:40,109 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:03:40,111 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:03:40,264 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:03:40,336 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,336 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:03:40,436 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:03:40,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4499,4512] [2022-07-12 11:03:40,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4559,4572] [2022-07-12 11:03:40,508 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,508 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,509 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,510 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,510 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,523 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,525 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:03:40,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:03:40,576 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:03:40,576 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:03:40,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:03:40,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:03:40,578 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:03:40,578 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:03:40,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:03:40,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:03:40,607 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:03:40,665 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,666 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:03:40,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:03:40,870 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:03:40,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40 WrapperNode [2022-07-12 11:03:40,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:03:40,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:03:40,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:03:40,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:03:40,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:40,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,085 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 986 [2022-07-12 11:03:41,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:03:41,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:03:41,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:03:41,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:03:41,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:03:41,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:03:41,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:03:41,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:03:41,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (1/1) ... [2022-07-12 11:03:41,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:03:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:41,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 11:03:41,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 11:03:41,264 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-07-12 11:03:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-07-12 11:03:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-07-12 11:03:41,265 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2022-07-12 11:03:41,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2022-07-12 11:03:41,266 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-12 11:03:41,266 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-12 11:03:41,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:03:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:03:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:03:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-12 11:03:41,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 11:03:41,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 11:03:41,268 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh64 [2022-07-12 11:03:41,268 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh64 [2022-07-12 11:03:41,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:03:41,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 11:03:41,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 11:03:41,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:03:41,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:03:41,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:03:41,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:03:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:03:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:03:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:03:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:03:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:03:41,270 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 11:03:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 11:03:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 11:03:41,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 11:03:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 11:03:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 11:03:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:03:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:03:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:03:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:03:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:03:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:03:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:03:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:03:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2022-07-12 11:03:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2022-07-12 11:03:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-12 11:03:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:03:41,569 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:03:41,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:03:42,773 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:03:42,781 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:03:42,782 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 11:03:42,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:03:42 BoogieIcfgContainer [2022-07-12 11:03:42,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:03:42,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:03:42,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:03:42,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:03:42,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:03:38" (1/3) ... [2022-07-12 11:03:42,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef06c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:03:42, skipping insertion in model container [2022-07-12 11:03:42,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:03:40" (2/3) ... [2022-07-12 11:03:42,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef06c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:03:42, skipping insertion in model container [2022-07-12 11:03:42,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:03:42" (3/3) ... [2022-07-12 11:03:42,792 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness.i [2022-07-12 11:03:42,804 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:03:42,805 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:03:42,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:03:42,889 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@34f952b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@260464f3 [2022-07-12 11:03:42,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:03:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 110 states have internal predecessors, (136), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-12 11:03:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 11:03:42,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:42,911 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:42,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1197527418, now seen corresponding path program 1 times [2022-07-12 11:03:42,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:42,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924079314] [2022-07-12 11:03:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:03:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:03:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:03:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:03:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:03:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:03:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:03:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:03:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:03:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:03:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:03:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:03:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-12 11:03:43,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:43,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924079314] [2022-07-12 11:03:43,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924079314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:43,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:03:43,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:03:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248203348] [2022-07-12 11:03:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:43,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:03:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:03:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:03:43,755 INFO L87 Difference]: Start difference. First operand has 174 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 110 states have internal predecessors, (136), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:03:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:44,463 INFO L93 Difference]: Finished difference Result 348 states and 502 transitions. [2022-07-12 11:03:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:03:44,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2022-07-12 11:03:44,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:44,475 INFO L225 Difference]: With dead ends: 348 [2022-07-12 11:03:44,476 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 11:03:44,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:03:44,483 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 124 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:44,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 299 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:03:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 11:03:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2022-07-12 11:03:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 105 states have internal predecessors, (128), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 11:03:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2022-07-12 11:03:44,530 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 135 [2022-07-12 11:03:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:44,530 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2022-07-12 11:03:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:03:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2022-07-12 11:03:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 11:03:44,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:44,534 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:03:44,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1588227836, now seen corresponding path program 1 times [2022-07-12 11:03:44,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:44,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734042492] [2022-07-12 11:03:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:44,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:03:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:03:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:03:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:03:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:03:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:03:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:03:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:03:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:03:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:03:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:03:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:03:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-12 11:03:44,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:44,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734042492] [2022-07-12 11:03:44,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734042492] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:44,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348774892] [2022-07-12 11:03:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:44,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:44,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:44,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:44,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:03:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:45,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:03:45,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-12 11:03:45,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:03:45,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348774892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:45,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:03:45,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 11:03:45,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157216010] [2022-07-12 11:03:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:45,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:03:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:03:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:03:45,662 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 11:03:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:45,898 INFO L93 Difference]: Finished difference Result 312 states and 433 transitions. [2022-07-12 11:03:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:03:45,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 135 [2022-07-12 11:03:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:45,901 INFO L225 Difference]: With dead ends: 312 [2022-07-12 11:03:45,902 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 11:03:45,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:03:45,904 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 250 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:45,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 637 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:03:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 11:03:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-12 11:03:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2022-07-12 11:03:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 237 transitions. [2022-07-12 11:03:45,922 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 237 transitions. Word has length 135 [2022-07-12 11:03:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:45,922 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 237 transitions. [2022-07-12 11:03:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 11:03:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 237 transitions. [2022-07-12 11:03:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 11:03:45,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:45,928 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:45,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:03:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:46,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1809199113, now seen corresponding path program 1 times [2022-07-12 11:03:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:46,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112975979] [2022-07-12 11:03:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:46,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:03:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:03:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:03:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:03:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 11:03:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:03:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:03:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 11:03:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-12 11:03:46,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:46,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112975979] [2022-07-12 11:03:46,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112975979] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:46,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776444722] [2022-07-12 11:03:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:46,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:46,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:46,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:46,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:03:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:47,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2791 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:03:47,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 11:03:47,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:03:47,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776444722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:47,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:03:47,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-12 11:03:47,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137455215] [2022-07-12 11:03:47,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:47,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:03:47,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:03:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:03:47,277 INFO L87 Difference]: Start difference. First operand 171 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:03:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:47,517 INFO L93 Difference]: Finished difference Result 298 states and 414 transitions. [2022-07-12 11:03:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:03:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 137 [2022-07-12 11:03:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:47,520 INFO L225 Difference]: With dead ends: 298 [2022-07-12 11:03:47,520 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 11:03:47,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:03:47,522 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 268 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 631 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:03:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 11:03:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-12 11:03:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-12 11:03:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 235 transitions. [2022-07-12 11:03:47,542 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 235 transitions. Word has length 137 [2022-07-12 11:03:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:47,543 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 235 transitions. [2022-07-12 11:03:47,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:03:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 235 transitions. [2022-07-12 11:03:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 11:03:47,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:47,546 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:47,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:03:47,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 11:03:47,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash 924370418, now seen corresponding path program 2 times [2022-07-12 11:03:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:47,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455236460] [2022-07-12 11:03:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:03:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:03:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:03:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:03:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:03:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:03:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:03:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-12 11:03:48,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:48,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455236460] [2022-07-12 11:03:48,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455236460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:48,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734701765] [2022-07-12 11:03:48,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:03:48,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:48,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:48,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:48,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:03:48,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:03:48,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:03:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 11:03:48,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 11:03:49,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:03:49,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734701765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:49,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:03:49,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2022-07-12 11:03:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974503567] [2022-07-12 11:03:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:49,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:03:49,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:49,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:03:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:03:49,073 INFO L87 Difference]: Start difference. First operand 171 states and 235 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 11:03:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:49,251 INFO L93 Difference]: Finished difference Result 292 states and 401 transitions. [2022-07-12 11:03:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:03:49,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 139 [2022-07-12 11:03:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:49,253 INFO L225 Difference]: With dead ends: 292 [2022-07-12 11:03:49,253 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 11:03:49,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:03:49,255 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 121 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:49,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1046 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:03:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 11:03:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-12 11:03:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-12 11:03:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 232 transitions. [2022-07-12 11:03:49,269 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 232 transitions. Word has length 139 [2022-07-12 11:03:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:49,270 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 232 transitions. [2022-07-12 11:03:49,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 11:03:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 232 transitions. [2022-07-12 11:03:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 11:03:49,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:49,272 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:49,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:03:49,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:49,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:49,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1539225303, now seen corresponding path program 3 times [2022-07-12 11:03:49,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:49,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88923602] [2022-07-12 11:03:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:49,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:03:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:03:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:03:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:03:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-12 11:03:49,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:49,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88923602] [2022-07-12 11:03:49,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88923602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:49,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402550376] [2022-07-12 11:03:49,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:03:49,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:49,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:49,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:03:50,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 11:03:50,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:03:50,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 11:03:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-12 11:03:50,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:03:50,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402550376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:50,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:03:50,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-12 11:03:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356817518] [2022-07-12 11:03:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:50,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:03:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:03:50,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:03:50,704 INFO L87 Difference]: Start difference. First operand 171 states and 232 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 11:03:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:50,819 INFO L93 Difference]: Finished difference Result 287 states and 387 transitions. [2022-07-12 11:03:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:03:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 141 [2022-07-12 11:03:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:50,826 INFO L225 Difference]: With dead ends: 287 [2022-07-12 11:03:50,826 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 11:03:50,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:03:50,828 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 2 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:50,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1238 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:03:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 11:03:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-12 11:03:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2022-07-12 11:03:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2022-07-12 11:03:50,846 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 141 [2022-07-12 11:03:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:50,846 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2022-07-12 11:03:50,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 11:03:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2022-07-12 11:03:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 11:03:50,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:50,849 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:50,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:03:51,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:51,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2064151164, now seen corresponding path program 4 times [2022-07-12 11:03:51,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:51,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314552688] [2022-07-12 11:03:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:03:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:03:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:03:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:03:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-12 11:03:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:51,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314552688] [2022-07-12 11:03:51,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314552688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:51,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:03:51,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 11:03:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356741568] [2022-07-12 11:03:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:51,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:03:51,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:03:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:03:51,471 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 11:03:52,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:52,876 INFO L93 Difference]: Finished difference Result 283 states and 377 transitions. [2022-07-12 11:03:52,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 11:03:52,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 143 [2022-07-12 11:03:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:52,878 INFO L225 Difference]: With dead ends: 283 [2022-07-12 11:03:52,878 INFO L226 Difference]: Without dead ends: 178 [2022-07-12 11:03:52,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:03:52,879 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 262 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:52,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 757 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 11:03:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-12 11:03:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 171. [2022-07-12 11:03:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-07-12 11:03:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-07-12 11:03:52,898 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 143 [2022-07-12 11:03:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:52,899 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-07-12 11:03:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 11:03:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-07-12 11:03:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 11:03:52,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:52,901 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:52,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 11:03:52,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash -231707039, now seen corresponding path program 1 times [2022-07-12 11:03:52,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:52,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408092310] [2022-07-12 11:03:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:52,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:03:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:03:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:03:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:03:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-12 11:03:53,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:53,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408092310] [2022-07-12 11:03:53,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408092310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:53,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:03:53,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:03:53,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708486126] [2022-07-12 11:03:53,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:53,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:03:53,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:53,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:03:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:03:53,331 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 11:03:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:54,571 INFO L93 Difference]: Finished difference Result 190 states and 261 transitions. [2022-07-12 11:03:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:03:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 145 [2022-07-12 11:03:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:54,578 INFO L225 Difference]: With dead ends: 190 [2022-07-12 11:03:54,578 INFO L226 Difference]: Without dead ends: 188 [2022-07-12 11:03:54,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:03:54,580 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 146 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:54,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 912 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 11:03:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-12 11:03:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 180. [2022-07-12 11:03:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 115 states have internal predecessors, (136), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2022-07-12 11:03:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 248 transitions. [2022-07-12 11:03:54,597 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 248 transitions. Word has length 145 [2022-07-12 11:03:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:54,597 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 248 transitions. [2022-07-12 11:03:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 11:03:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 248 transitions. [2022-07-12 11:03:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:03:54,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:54,600 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:54,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:03:54,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1066799847, now seen corresponding path program 1 times [2022-07-12 11:03:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:54,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947141428] [2022-07-12 11:03:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:03:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:03:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:03:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:03:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-12 11:03:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:55,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947141428] [2022-07-12 11:03:55,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947141428] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:55,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907423748] [2022-07-12 11:03:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:55,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:55,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:55,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:03:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:55,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2818 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:03:55,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-12 11:03:55,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:03:55,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907423748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:03:55,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:03:55,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-12 11:03:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474458749] [2022-07-12 11:03:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:03:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:03:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:03:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:03:55,678 INFO L87 Difference]: Start difference. First operand 180 states and 248 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 11:03:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:03:55,915 INFO L93 Difference]: Finished difference Result 333 states and 473 transitions. [2022-07-12 11:03:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:03:55,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 149 [2022-07-12 11:03:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:03:55,917 INFO L225 Difference]: With dead ends: 333 [2022-07-12 11:03:55,917 INFO L226 Difference]: Without dead ends: 180 [2022-07-12 11:03:55,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:03:55,919 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 3 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:03:55,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 601 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2022-07-12 11:03:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-12 11:03:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-12 11:03:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 115 states have internal predecessors, (135), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2022-07-12 11:03:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 247 transitions. [2022-07-12 11:03:55,937 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 247 transitions. Word has length 149 [2022-07-12 11:03:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:03:55,938 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 247 transitions. [2022-07-12 11:03:55,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 11:03:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 247 transitions. [2022-07-12 11:03:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:03:55,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:03:55,940 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:03:55,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:03:56,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:56,160 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:03:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:03:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 808634409, now seen corresponding path program 1 times [2022-07-12 11:03:56,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:03:56,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551723320] [2022-07-12 11:03:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:03:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:03:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:03:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:03:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:03:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:03:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:03:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:03:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:03:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:03:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:03:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:03:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:03:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:03:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:03:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:03:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:03:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:03:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 11:03:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:03:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-12 11:03:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:03:56,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551723320] [2022-07-12 11:03:56,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551723320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:03:56,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903240150] [2022-07-12 11:03:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:03:56,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:03:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:03:56,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:03:56,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:03:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:03:57,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-12 11:03:57,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:03:57,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:03:57,482 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 [2022-07-12 11:03:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-12 11:03:57,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:03:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-12 11:03:58,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903240150] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:03:58,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:03:58,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-07-12 11:03:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118369931] [2022-07-12 11:03:58,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:03:58,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 11:03:58,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:03:58,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 11:03:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:03:58,045 INFO L87 Difference]: Start difference. First operand 180 states and 247 transitions. Second operand has 31 states, 28 states have (on average 4.821428571428571) internal successors, (135), 23 states have internal predecessors, (135), 12 states have call successors, (62), 7 states have call predecessors, (62), 8 states have return successors, (57), 11 states have call predecessors, (57), 11 states have call successors, (57) [2022-07-12 11:04:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:01,704 INFO L93 Difference]: Finished difference Result 361 states and 500 transitions. [2022-07-12 11:04:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 11:04:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.821428571428571) internal successors, (135), 23 states have internal predecessors, (135), 12 states have call successors, (62), 7 states have call predecessors, (62), 8 states have return successors, (57), 11 states have call predecessors, (57), 11 states have call successors, (57) Word has length 149 [2022-07-12 11:04:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:01,706 INFO L225 Difference]: With dead ends: 361 [2022-07-12 11:04:01,706 INFO L226 Difference]: Without dead ends: 185 [2022-07-12 11:04:01,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 322 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 11:04:01,708 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 265 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:01,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2096 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 3307 Invalid, 0 Unknown, 201 Unchecked, 3.1s Time] [2022-07-12 11:04:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-12 11:04:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2022-07-12 11:04:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 115 states have internal predecessors, (134), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (60), 50 states have call predecessors, (60), 50 states have call successors, (60) [2022-07-12 11:04:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 245 transitions. [2022-07-12 11:04:01,720 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 245 transitions. Word has length 149 [2022-07-12 11:04:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:01,720 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 245 transitions. [2022-07-12 11:04:01,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.821428571428571) internal successors, (135), 23 states have internal predecessors, (135), 12 states have call successors, (62), 7 states have call predecessors, (62), 8 states have return successors, (57), 11 states have call predecessors, (57), 11 states have call successors, (57) [2022-07-12 11:04:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 245 transitions. [2022-07-12 11:04:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 11:04:01,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:01,722 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:01,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:01,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:01,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -79522546, now seen corresponding path program 1 times [2022-07-12 11:04:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:01,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991865919] [2022-07-12 11:04:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:04:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:04:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:04:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:04:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:04:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:04:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:04:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:04:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:04:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:04:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 11:04:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 11:04:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 11:04:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 11:04:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:04:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:02,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991865919] [2022-07-12 11:04:02,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991865919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:02,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:02,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:04:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075768597] [2022-07-12 11:04:02,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:04:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:04:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:04:02,348 INFO L87 Difference]: Start difference. First operand 180 states and 245 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:04:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:03,192 INFO L93 Difference]: Finished difference Result 327 states and 450 transitions. [2022-07-12 11:04:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:04:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 164 [2022-07-12 11:04:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:03,194 INFO L225 Difference]: With dead ends: 327 [2022-07-12 11:04:03,194 INFO L226 Difference]: Without dead ends: 187 [2022-07-12 11:04:03,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:03,195 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 123 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:03,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 493 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 11:04:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-12 11:04:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2022-07-12 11:04:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.208695652173913) internal successors, (139), 119 states have internal predecessors, (139), 51 states have call successors, (51), 14 states have call predecessors, (51), 17 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2022-07-12 11:04:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 251 transitions. [2022-07-12 11:04:03,207 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 251 transitions. Word has length 164 [2022-07-12 11:04:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:03,207 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 251 transitions. [2022-07-12 11:04:03,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:04:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 251 transitions. [2022-07-12 11:04:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 11:04:03,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:03,209 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 11:04:03,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:03,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 679606967, now seen corresponding path program 1 times [2022-07-12 11:04:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:03,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051461531] [2022-07-12 11:04:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:04:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:04:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:04:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:04:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:04:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:04:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:04:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:04:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:04:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:04:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 11:04:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:04:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 11:04:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 11:04:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:04:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:03,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051461531] [2022-07-12 11:04:03,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051461531] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:03,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222744163] [2022-07-12 11:04:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:03,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:03,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:03,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:03,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:04:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:04:04,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-12 11:04:04,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:04,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222744163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:04,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:04,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-07-12 11:04:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279671595] [2022-07-12 11:04:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:04:04,321 INFO L87 Difference]: Start difference. First operand 184 states and 251 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:04:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:04,486 INFO L93 Difference]: Finished difference Result 346 states and 484 transitions. [2022-07-12 11:04:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:04:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 165 [2022-07-12 11:04:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:04,488 INFO L225 Difference]: With dead ends: 346 [2022-07-12 11:04:04,488 INFO L226 Difference]: Without dead ends: 189 [2022-07-12 11:04:04,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:04:04,489 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 11 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:04,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1680 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-12 11:04:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-07-12 11:04:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 124 states have internal predecessors, (143), 51 states have call successors, (51), 14 states have call predecessors, (51), 18 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-07-12 11:04:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 264 transitions. [2022-07-12 11:04:04,501 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 264 transitions. Word has length 165 [2022-07-12 11:04:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:04,502 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 264 transitions. [2022-07-12 11:04:04,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-12 11:04:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 264 transitions. [2022-07-12 11:04:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 11:04:04,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:04,504 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:04,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:04,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1879124164, now seen corresponding path program 1 times [2022-07-12 11:04:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16536664] [2022-07-12 11:04:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:04:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:04:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:04:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:04:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:04:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:04:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:04:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:04:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:04:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 11:04:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:04:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:04:05,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:05,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16536664] [2022-07-12 11:04:05,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16536664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:05,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277011898] [2022-07-12 11:04:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:05,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:05,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:05,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:05,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:04:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:05,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:04:05,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-12 11:04:05,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:05,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277011898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:05,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:05,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-12 11:04:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232133376] [2022-07-12 11:04:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:05,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:04:05,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:04:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:05,769 INFO L87 Difference]: Start difference. First operand 189 states and 264 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:04:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:06,080 INFO L93 Difference]: Finished difference Result 351 states and 507 transitions. [2022-07-12 11:04:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:04:06,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 167 [2022-07-12 11:04:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:06,082 INFO L225 Difference]: With dead ends: 351 [2022-07-12 11:04:06,082 INFO L226 Difference]: Without dead ends: 189 [2022-07-12 11:04:06,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:04:06,083 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 15 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:06,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 786 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-07-12 11:04:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-12 11:04:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-07-12 11:04:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 124 states have internal predecessors, (142), 51 states have call successors, (51), 14 states have call predecessors, (51), 18 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-07-12 11:04:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2022-07-12 11:04:06,095 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 167 [2022-07-12 11:04:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:06,095 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2022-07-12 11:04:06,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:04:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2022-07-12 11:04:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 11:04:06,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:06,097 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:06,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:06,319 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,SelfDestructingSolverStorable11 [2022-07-12 11:04:06,319 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1467791166, now seen corresponding path program 1 times [2022-07-12 11:04:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168451428] [2022-07-12 11:04:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:04:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:04:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:04:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:04:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:04:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:04:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:04:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:04:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:04:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 11:04:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:04:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:04:06,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168451428] [2022-07-12 11:04:06,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168451428] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900667038] [2022-07-12 11:04:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:06,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:06,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:06,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:06,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:04:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:04:07,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 132 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-12 11:04:07,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:04:07,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900667038] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:07,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:04:07,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2022-07-12 11:04:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572900008] [2022-07-12 11:04:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:04:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:04:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:07,347 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:04:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:07,481 INFO L93 Difference]: Finished difference Result 345 states and 488 transitions. [2022-07-12 11:04:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:04:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 167 [2022-07-12 11:04:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:07,483 INFO L225 Difference]: With dead ends: 345 [2022-07-12 11:04:07,483 INFO L226 Difference]: Without dead ends: 195 [2022-07-12 11:04:07,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:07,484 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 5 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:07,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 653 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-12 11:04:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2022-07-12 11:04:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 126 states have internal predecessors, (145), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-07-12 11:04:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 266 transitions. [2022-07-12 11:04:07,497 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 266 transitions. Word has length 167 [2022-07-12 11:04:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:07,498 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 266 transitions. [2022-07-12 11:04:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:04:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 266 transitions. [2022-07-12 11:04:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 11:04:07,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:07,500 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:07,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:07,715 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,SelfDestructingSolverStorable12 [2022-07-12 11:04:07,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:07,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash -484872827, now seen corresponding path program 1 times [2022-07-12 11:04:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:07,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709974152] [2022-07-12 11:04:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:04:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:04:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:04:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:04:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:04:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:04:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:04:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:04:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:04:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 11:04:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 11:04:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-12 11:04:08,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:08,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709974152] [2022-07-12 11:04:08,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709974152] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:08,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110664579] [2022-07-12 11:04:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:08,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:08,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:08,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:08,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:04:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-12 11:04:08,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:14,050 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-12 11:04:14,050 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 38 treesize of output 20 [2022-07-12 11:04:14,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-12 11:04:14,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-12 11:04:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-12 11:04:14,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:14,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110664579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:14,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:14,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 19 [2022-07-12 11:04:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600963792] [2022-07-12 11:04:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:04:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:04:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=285, Unknown=1, NotChecked=0, Total=342 [2022-07-12 11:04:14,102 INFO L87 Difference]: Start difference. First operand 192 states and 266 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 11:04:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:15,429 INFO L93 Difference]: Finished difference Result 351 states and 487 transitions. [2022-07-12 11:04:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 11:04:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 168 [2022-07-12 11:04:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:15,431 INFO L225 Difference]: With dead ends: 351 [2022-07-12 11:04:15,431 INFO L226 Difference]: Without dead ends: 197 [2022-07-12 11:04:15,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 193 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=137, Invalid=618, Unknown=1, NotChecked=0, Total=756 [2022-07-12 11:04:15,435 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 204 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:15,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 837 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 838 Invalid, 0 Unknown, 149 Unchecked, 0.9s Time] [2022-07-12 11:04:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-12 11:04:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2022-07-12 11:04:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.176) internal successors, (147), 129 states have internal predecessors, (147), 51 states have call successors, (51), 16 states have call predecessors, (51), 19 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-07-12 11:04:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 268 transitions. [2022-07-12 11:04:15,455 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 268 transitions. Word has length 168 [2022-07-12 11:04:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:15,456 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 268 transitions. [2022-07-12 11:04:15,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 11:04:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 268 transitions. [2022-07-12 11:04:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-12 11:04:15,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:15,458 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:15,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:15,672 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,SelfDestructingSolverStorable13 [2022-07-12 11:04:15,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash 238687209, now seen corresponding path program 1 times [2022-07-12 11:04:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533207634] [2022-07-12 11:04:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 11:04:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:04:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:04:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:04:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:04:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:04:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:04:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:04:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:04:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:04:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 11:04:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:04:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 11:04:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-07-12 11:04:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533207634] [2022-07-12 11:04:16,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533207634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:16,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:16,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:04:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187742403] [2022-07-12 11:04:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:16,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:16,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:04:16,063 INFO L87 Difference]: Start difference. First operand 196 states and 268 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-12 11:04:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:17,189 INFO L93 Difference]: Finished difference Result 367 states and 509 transitions. [2022-07-12 11:04:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:04:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 175 [2022-07-12 11:04:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:17,191 INFO L225 Difference]: With dead ends: 367 [2022-07-12 11:04:17,191 INFO L226 Difference]: Without dead ends: 199 [2022-07-12 11:04:17,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:04:17,193 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 199 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:17,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 637 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 11:04:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-12 11:04:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2022-07-12 11:04:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.168) internal successors, (146), 129 states have internal predecessors, (146), 51 states have call successors, (51), 16 states have call predecessors, (51), 19 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-07-12 11:04:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 267 transitions. [2022-07-12 11:04:17,206 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 267 transitions. Word has length 175 [2022-07-12 11:04:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:17,207 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 267 transitions. [2022-07-12 11:04:17,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-12 11:04:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 267 transitions. [2022-07-12 11:04:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 11:04:17,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:17,208 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:17,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 11:04:17,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash 605484022, now seen corresponding path program 1 times [2022-07-12 11:04:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:17,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015653201] [2022-07-12 11:04:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:04:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:04:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:04:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:04:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:04:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:04:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:04:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 11:04:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 11:04:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 11:04:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 11:04:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 11:04:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 11:04:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-12 11:04:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-12 11:04:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 11:04:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-12 11:04:17,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:17,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015653201] [2022-07-12 11:04:17,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015653201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:17,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425877132] [2022-07-12 11:04:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:17,720 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:17,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:04:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:18,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 3113 conjuncts, 152 conjunts are in the unsatisfiable core [2022-07-12 11:04:18,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:18,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:04:18,407 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 11:04:18,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-12 11:04:18,487 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 11:04:18,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-12 11:04:19,043 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:04:19,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-12 11:04:19,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:04:21,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:04:21,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:04:25,496 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:04:25,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-12 11:04:25,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-07-12 11:04:27,658 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:04:27,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:04:27,698 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-12 11:04:27,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2022-07-12 11:04:28,775 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:04:28,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:04:29,116 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:04:29,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 11:04:29,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 11:04:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 87 proven. 177 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:04:29,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:30,192 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2451 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2451) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0)) is different from false [2022-07-12 11:04:30,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425877132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:30,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:04:30,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 39] total 44 [2022-07-12 11:04:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374313082] [2022-07-12 11:04:30,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:04:30,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 11:04:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 11:04:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2720, Unknown=34, NotChecked=106, Total=3080 [2022-07-12 11:04:30,260 INFO L87 Difference]: Start difference. First operand 196 states and 267 transitions. Second operand has 44 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 39 states have internal predecessors, (156), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 13 states have call successors, (50) [2022-07-12 11:04:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:49,884 INFO L93 Difference]: Finished difference Result 388 states and 522 transitions. [2022-07-12 11:04:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 11:04:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 39 states have internal predecessors, (156), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 13 states have call successors, (50) Word has length 186 [2022-07-12 11:04:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:49,887 INFO L225 Difference]: With dead ends: 388 [2022-07-12 11:04:49,887 INFO L226 Difference]: Without dead ends: 222 [2022-07-12 11:04:49,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 182 SyntacticMatches, 30 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=370, Invalid=4555, Unknown=49, NotChecked=138, Total=5112 [2022-07-12 11:04:49,889 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 191 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1151 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:49,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1726 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 873 Invalid, 0 Unknown, 1151 Unchecked, 0.8s Time] [2022-07-12 11:04:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-12 11:04:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2022-07-12 11:04:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 141 states have (on average 1.1560283687943262) internal successors, (163), 144 states have internal predecessors, (163), 51 states have call successors, (51), 19 states have call predecessors, (51), 21 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2022-07-12 11:04:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 275 transitions. [2022-07-12 11:04:49,911 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 275 transitions. Word has length 186 [2022-07-12 11:04:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:49,912 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 275 transitions. [2022-07-12 11:04:49,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 39 states have internal predecessors, (156), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 12 states have call predecessors, (50), 13 states have call successors, (50) [2022-07-12 11:04:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 275 transitions. [2022-07-12 11:04:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-12 11:04:49,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:49,913 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:49,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 11:04:50,123 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,SelfDestructingSolverStorable15 [2022-07-12 11:04:50,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1202337547, now seen corresponding path program 2 times [2022-07-12 11:04:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:50,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671595919] [2022-07-12 11:04:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:04:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:04:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:04:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:04:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:04:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:04:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:04:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:04:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:04:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:04:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 11:04:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 11:04:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 11:04:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 11:04:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-12 11:04:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-12 11:04:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 11:04:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-12 11:04:50,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:50,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671595919] [2022-07-12 11:04:50,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671595919] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:50,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861024258] [2022-07-12 11:04:50,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:04:50,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:50,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:50,670 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:04:50,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:04:52,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:04:52,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:52,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3241 conjuncts, 143 conjunts are in the unsatisfiable core [2022-07-12 11:04:52,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:52,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:04:52,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:04:52,141 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:04:52,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:04:52,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:04:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:04:52,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-12 11:04:52,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:04:53,140 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 11:04:53,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-12 11:04:53,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2022-07-12 11:04:53,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:04:53,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:04:53,589 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-12 11:04:53,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 11:04:53,649 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2967 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2967) |c_#memory_int|)) is different from true [2022-07-12 11:04:53,654 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2970 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2970) |c_#memory_int|)) is different from true [2022-07-12 11:04:53,667 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2971 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2971) |c_#memory_int|)) is different from true [2022-07-12 11:04:53,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:04:57,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:05:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 163 proven. 119 refuted. 0 times theorem prover too weak. 64 trivial. 4 not checked. [2022-07-12 11:05:26,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:27,421 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2972 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_2972) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-12 11:05:27,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861024258] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:27,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:05:27,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 35] total 41 [2022-07-12 11:05:27,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527301123] [2022-07-12 11:05:27,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:27,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-12 11:05:27,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:27,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-12 11:05:27,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2118, Unknown=6, NotChecked=380, Total=2652 [2022-07-12 11:05:27,433 INFO L87 Difference]: Start difference. First operand 214 states and 275 transitions. Second operand has 41 states, 40 states have (on average 4.05) internal successors, (162), 35 states have internal predecessors, (162), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 13 states have call predecessors, (50), 13 states have call successors, (50) [2022-07-12 11:05:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:39,847 INFO L93 Difference]: Finished difference Result 375 states and 504 transitions. [2022-07-12 11:05:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 11:05:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.05) internal successors, (162), 35 states have internal predecessors, (162), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 13 states have call predecessors, (50), 13 states have call successors, (50) Word has length 187 [2022-07-12 11:05:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:39,850 INFO L225 Difference]: With dead ends: 375 [2022-07-12 11:05:39,850 INFO L226 Difference]: Without dead ends: 228 [2022-07-12 11:05:39,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 247 SyntacticMatches, 25 SemanticMatches, 63 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=244, Invalid=3419, Unknown=13, NotChecked=484, Total=4160 [2022-07-12 11:05:39,852 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 113 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 3815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2329 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:39,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2075 Invalid, 3815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1361 Invalid, 0 Unknown, 2329 Unchecked, 1.6s Time] [2022-07-12 11:05:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-12 11:05:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 215. [2022-07-12 11:05:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 142 states have (on average 1.1619718309859155) internal successors, (165), 145 states have internal predecessors, (165), 51 states have call successors, (51), 19 states have call predecessors, (51), 21 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2022-07-12 11:05:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 277 transitions. [2022-07-12 11:05:39,871 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 277 transitions. Word has length 187 [2022-07-12 11:05:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:39,872 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 277 transitions. [2022-07-12 11:05:39,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.05) internal successors, (162), 35 states have internal predecessors, (162), 13 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (50), 13 states have call predecessors, (50), 13 states have call successors, (50) [2022-07-12 11:05:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 277 transitions. [2022-07-12 11:05:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 11:05:39,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:39,873 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:39,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-12 11:05:40,087 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,SelfDestructingSolverStorable16 [2022-07-12 11:05:40,087 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1770039658, now seen corresponding path program 3 times [2022-07-12 11:05:40,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:40,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473187246] [2022-07-12 11:05:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:40,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:05:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:05:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:05:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:05:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:05:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:05:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:05:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:05:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:05:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:05:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 11:05:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 11:05:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-12 11:05:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 11:05:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-12 11:05:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-12 11:05:40,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473187246] [2022-07-12 11:05:40,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473187246] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:40,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744543089] [2022-07-12 11:05:40,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:05:40,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:40,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:40,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:40,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:05:42,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-12 11:05:42,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:05:42,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-12 11:05:42,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:43,042 INFO L356 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2022-07-12 11:05:43,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 11:05:43,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 11:05:43,052 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 7 treesize of output 5 [2022-07-12 11:05:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-12 11:05:43,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:43,574 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:05:43,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-07-12 11:05:43,579 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (or (<= (mod (select (select (store |c_#memory_int| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_1) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0) (not (= (select v_arrayElimArr_1 |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.offset|) 0)))) is different from false [2022-07-12 11:05:43,594 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (or (<= (mod (select (select (store |c_#memory_int| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_1) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0) (not (= (select v_arrayElimArr_1 0) 0)))) is different from false [2022-07-12 11:05:43,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744543089] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:43,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:05:43,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22] total 29 [2022-07-12 11:05:43,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770523785] [2022-07-12 11:05:43,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:43,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 11:05:43,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:43,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 11:05:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1010, Unknown=2, NotChecked=130, Total=1260 [2022-07-12 11:05:43,606 INFO L87 Difference]: Start difference. First operand 215 states and 277 transitions. Second operand has 29 states, 27 states have (on average 4.592592592592593) internal successors, (124), 23 states have internal predecessors, (124), 8 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (45), 7 states have call predecessors, (45), 8 states have call successors, (45) [2022-07-12 11:05:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:47,515 INFO L93 Difference]: Finished difference Result 488 states and 700 transitions. [2022-07-12 11:05:47,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 11:05:47,517 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.592592592592593) internal successors, (124), 23 states have internal predecessors, (124), 8 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (45), 7 states have call predecessors, (45), 8 states have call successors, (45) Word has length 188 [2022-07-12 11:05:47,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:47,519 INFO L225 Difference]: With dead ends: 488 [2022-07-12 11:05:47,519 INFO L226 Difference]: Without dead ends: 332 [2022-07-12 11:05:47,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=270, Invalid=2928, Unknown=2, NotChecked=222, Total=3422 [2022-07-12 11:05:47,522 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 344 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 3935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1017 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:47,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 2367 Invalid, 3935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2593 Invalid, 0 Unknown, 1017 Unchecked, 3.3s Time] [2022-07-12 11:05:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-12 11:05:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 231. [2022-07-12 11:05:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 155 states have (on average 1.1741935483870967) internal successors, (182), 157 states have internal predecessors, (182), 53 states have call successors, (53), 21 states have call predecessors, (53), 22 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-12 11:05:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 299 transitions. [2022-07-12 11:05:47,543 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 299 transitions. Word has length 188 [2022-07-12 11:05:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:47,543 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 299 transitions. [2022-07-12 11:05:47,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.592592592592593) internal successors, (124), 23 states have internal predecessors, (124), 8 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (45), 7 states have call predecessors, (45), 8 states have call successors, (45) [2022-07-12 11:05:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 299 transitions. [2022-07-12 11:05:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 11:05:47,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:47,545 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:47,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:47,755 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,SelfDestructingSolverStorable17 [2022-07-12 11:05:47,755 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1431173042, now seen corresponding path program 1 times [2022-07-12 11:05:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702181012] [2022-07-12 11:05:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:05:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:05:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:05:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:05:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:05:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:05:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:05:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:05:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:05:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:05:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:05:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:05:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:05:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 11:05:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 11:05:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 11:05:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-07-12 11:05:48,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:48,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702181012] [2022-07-12 11:05:48,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702181012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:48,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:48,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 11:05:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170411237] [2022-07-12 11:05:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:48,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:05:48,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:05:48,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:05:48,462 INFO L87 Difference]: Start difference. First operand 231 states and 299 transitions. Second operand has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-12 11:05:50,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:50,369 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2022-07-12 11:05:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 11:05:50,370 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 191 [2022-07-12 11:05:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:50,371 INFO L225 Difference]: With dead ends: 247 [2022-07-12 11:05:50,371 INFO L226 Difference]: Without dead ends: 245 [2022-07-12 11:05:50,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:05:50,372 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 154 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:50,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1278 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 11:05:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-12 11:05:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 236. [2022-07-12 11:05:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 159 states have (on average 1.169811320754717) internal successors, (186), 162 states have internal predecessors, (186), 53 states have call successors, (53), 21 states have call predecessors, (53), 23 states have return successors, (73), 52 states have call predecessors, (73), 52 states have call successors, (73) [2022-07-12 11:05:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 312 transitions. [2022-07-12 11:05:50,389 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 312 transitions. Word has length 191 [2022-07-12 11:05:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:50,390 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 312 transitions. [2022-07-12 11:05:50,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 11 states have internal predecessors, (76), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-12 11:05:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 312 transitions. [2022-07-12 11:05:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 11:05:50,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:50,392 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 11:05:50,392 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -247797245, now seen corresponding path program 1 times [2022-07-12 11:05:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:50,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10658904] [2022-07-12 11:05:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:05:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:05:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:05:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:05:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:05:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:05:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:05:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:05:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:05:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:05:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:05:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:05:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:05:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 11:05:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 11:05:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 11:05:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-07-12 11:05:50,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:50,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10658904] [2022-07-12 11:05:50,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10658904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:50,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:50,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:05:50,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713251470] [2022-07-12 11:05:50,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:50,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:05:50,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:50,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:05:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:05:50,748 INFO L87 Difference]: Start difference. First operand 236 states and 312 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:05:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:51,367 INFO L93 Difference]: Finished difference Result 376 states and 503 transitions. [2022-07-12 11:05:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:05:51,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 192 [2022-07-12 11:05:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:51,369 INFO L225 Difference]: With dead ends: 376 [2022-07-12 11:05:51,369 INFO L226 Difference]: Without dead ends: 241 [2022-07-12 11:05:51,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:05:51,370 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 111 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:51,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 384 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:05:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-12 11:05:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 238. [2022-07-12 11:05:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 161 states have (on average 1.1677018633540373) internal successors, (188), 164 states have internal predecessors, (188), 53 states have call successors, (53), 21 states have call predecessors, (53), 23 states have return successors, (73), 52 states have call predecessors, (73), 52 states have call successors, (73) [2022-07-12 11:05:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 314 transitions. [2022-07-12 11:05:51,387 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 314 transitions. Word has length 192 [2022-07-12 11:05:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:51,388 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 314 transitions. [2022-07-12 11:05:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:05:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 314 transitions. [2022-07-12 11:05:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 11:05:51,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:51,389 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:51,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 11:05:51,390 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash -670499071, now seen corresponding path program 1 times [2022-07-12 11:05:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:51,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277317637] [2022-07-12 11:05:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:51,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:05:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:05:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 11:05:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:05:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:05:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:05:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:05:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 11:05:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:05:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:05:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 11:05:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:05:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 11:05:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:05:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:05:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 11:05:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 11:05:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 11:05:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-12 11:05:52,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:52,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277317637] [2022-07-12 11:05:52,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277317637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:52,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962410326] [2022-07-12 11:05:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:52,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:52,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:05:52,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:05:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:53,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 3583 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-12 11:05:53,235 INFO L286 TraceCheckSpWp]: Computing forward predicates...