./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_buf_write_be16_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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:59:33,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:59:33,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:59:33,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:59:33,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:59:33,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:59:33,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:59:33,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:59:33,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:59:33,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:59:33,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:59:33,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:59:33,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:59:33,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:59:33,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:59:33,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:59:33,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:59:33,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:59:33,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:59:33,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:59:33,384 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:59:33,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:59:33,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:59:33,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:59:33,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:59:33,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:59:33,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:59:33,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:59:33,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:59:33,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:59:33,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:59:33,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:59:33,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:59:33,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:59:33,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:59:33,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:59:33,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:59:33,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:59:33,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:59:33,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:59:33,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:59:33,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:59:33,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:59:33,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:59:33,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:59:33,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:59:33,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:59:33,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:59:33,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:59:33,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:59:33,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:59:33,430 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:59:33,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:59:33,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:59:33,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:59:33,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:59:33,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:59:33,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:59:33,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:59:33,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:59:33,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:59:33,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:59:33,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:59:33,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:59:33,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:33,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:59:33,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:59:33,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:59:33,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:59:33,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:59:33,434 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:59:33,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:59:33,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:59:33,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 [2022-07-19 21:59:33,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:59:33,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:59:33,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:59:33,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:59:33,700 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:59:33,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2022-07-19 21:59:33,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3758d1d6f/e9afb24500254cd2b724473948b6b4aa/FLAGe736549fb [2022-07-19 21:59:34,448 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:59:34,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2022-07-19 21:59:34,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3758d1d6f/e9afb24500254cd2b724473948b6b4aa/FLAGe736549fb [2022-07-19 21:59:34,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3758d1d6f/e9afb24500254cd2b724473948b6b4aa [2022-07-19 21:59:34,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:59:34,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:59:34,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:34,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:59:34,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:59:34,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:34" (1/1) ... [2022-07-19 21:59:34,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344c73d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:34, skipping insertion in model container [2022-07-19 21:59:34,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:34" (1/1) ... [2022-07-19 21:59:34,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:59:34,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:59:35,077 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_buf_write_be16_harness.i[4497,4510] [2022-07-19 21:59:35,082 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_buf_write_be16_harness.i[4557,4570] [2022-07-19 21:59:35,640 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,642 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,654 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,662 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,664 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,668 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:35,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:35,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:35,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:35,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:35,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:35,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:35,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:35,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:35,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:35,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:36,118 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:36,222 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,223 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:36,333 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:59:36,347 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_buf_write_be16_harness.i[4497,4510] [2022-07-19 21:59:36,347 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_buf_write_be16_harness.i[4557,4570] [2022-07-19 21:59:36,372 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,373 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,373 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,373 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,374 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,377 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:36,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:36,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:36,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:36,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:36,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:36,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:36,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:36,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:36,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:36,446 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:36,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,501 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:36,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:36,750 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:59:36,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36 WrapperNode [2022-07-19 21:59:36,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:36,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:36,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:59:36,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:59:36,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:36,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:36,967 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 866 [2022-07-19 21:59:36,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:36,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:59:36,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:59:36,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:59:36,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:36,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:36,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:36,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:37,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:37,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:37,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:37,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:59:37,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:59:37,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:59:37,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:59:37,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (1/1) ... [2022-07-19 21:59:37,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:37,100 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) [2022-07-19 21:59:37,124 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 [2022-07-19 21:59:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2022-07-19 21:59:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-19 21:59:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-19 21:59:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:59:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:59:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:59:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:59:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:59:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:59:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:59:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:59:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:59:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:59:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:59:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:59:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:59:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:59:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:59:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 21:59:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 21:59:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:59:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:59:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:59:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:59:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:59:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:59:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-19 21:59:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-19 21:59:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:59:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:59:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:59:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:59:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:59:37,408 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:59:37,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:59:38,490 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:59:38,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:59:38,500 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:59:38,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:38 BoogieIcfgContainer [2022-07-19 21:59:38,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:59:38,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:59:38,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:59:38,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:59:38,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:59:34" (1/3) ... [2022-07-19 21:59:38,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5b208a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:38, skipping insertion in model container [2022-07-19 21:59:38,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:36" (2/3) ... [2022-07-19 21:59:38,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5b208a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:38, skipping insertion in model container [2022-07-19 21:59:38,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:38" (3/3) ... [2022-07-19 21:59:38,512 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2022-07-19 21:59:38,525 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:59:38,525 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:59:38,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:59:38,603 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@220b75f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4fe055a5 [2022-07-19 21:59:38,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:59:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 states have internal predecessors, (106), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 21:59:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 21:59:38,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:38,621 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:38,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 239952465, now seen corresponding path program 1 times [2022-07-19 21:59:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:38,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291714924] [2022-07-19 21:59:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:38,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:59:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:59:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 21:59:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:59:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-19 21:59:39,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:39,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291714924] [2022-07-19 21:59:39,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291714924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:39,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:39,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:59:39,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045839442] [2022-07-19 21:59:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:39,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:59:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:59:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:59:39,447 INFO L87 Difference]: Start difference. First operand has 132 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 states have internal predecessors, (106), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:39,731 INFO L93 Difference]: Finished difference Result 260 states and 369 transitions. [2022-07-19 21:59:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:59:39,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2022-07-19 21:59:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:39,753 INFO L225 Difference]: With dead ends: 260 [2022-07-19 21:59:39,757 INFO L226 Difference]: Without dead ends: 127 [2022-07-19 21:59:39,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:59:39,774 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 62 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:39,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 191 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:59:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-19 21:59:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-19 21:59:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 83 states have internal predecessors, (99), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-19 21:59:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-07-19 21:59:39,833 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 86 [2022-07-19 21:59:39,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:39,833 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-07-19 21:59:39,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-07-19 21:59:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 21:59:39,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:39,844 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:39,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:59:39,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash 89659733, now seen corresponding path program 1 times [2022-07-19 21:59:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:39,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144084198] [2022-07-19 21:59:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:39,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:59:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:59:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 21:59:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:59:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:40,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144084198] [2022-07-19 21:59:40,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144084198] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667764121] [2022-07-19 21:59:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:40,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:40,238 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) [2022-07-19 21:59:40,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:59:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:59:40,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 21:59:40,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:40,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667764121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:40,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:40,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-19 21:59:40,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509177798] [2022-07-19 21:59:40,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:40,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:59:40,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:59:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:59:40,948 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 21:59:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:41,160 INFO L93 Difference]: Finished difference Result 232 states and 311 transitions. [2022-07-19 21:59:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:59:41,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 86 [2022-07-19 21:59:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:41,167 INFO L225 Difference]: With dead ends: 232 [2022-07-19 21:59:41,167 INFO L226 Difference]: Without dead ends: 130 [2022-07-19 21:59:41,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:59:41,171 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 195 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:41,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 471 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-19 21:59:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-07-19 21:59:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2022-07-19 21:59:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2022-07-19 21:59:41,213 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 86 [2022-07-19 21:59:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:41,214 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2022-07-19 21:59:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 21:59:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2022-07-19 21:59:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 21:59:41,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:41,219 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:41,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:41,431 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 [2022-07-19 21:59:41,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash -171255798, now seen corresponding path program 1 times [2022-07-19 21:59:41,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:41,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282264970] [2022-07-19 21:59:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 21:59:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 21:59:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 21:59:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:41,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:41,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282264970] [2022-07-19 21:59:41,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282264970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:41,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975804402] [2022-07-19 21:59:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:41,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:41,812 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) [2022-07-19 21:59:41,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:59:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:42,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:59:42,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 21:59:42,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:42,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975804402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:42,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:42,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 21:59:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829939959] [2022-07-19 21:59:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:59:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:42,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:59:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:59:42,411 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:59:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:42,607 INFO L93 Difference]: Finished difference Result 227 states and 302 transitions. [2022-07-19 21:59:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:59:42,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 92 [2022-07-19 21:59:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:42,609 INFO L225 Difference]: With dead ends: 227 [2022-07-19 21:59:42,609 INFO L226 Difference]: Without dead ends: 130 [2022-07-19 21:59:42,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:59:42,611 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 212 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:42,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 581 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-19 21:59:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-07-19 21:59:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-19 21:59:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 171 transitions. [2022-07-19 21:59:42,622 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 171 transitions. Word has length 92 [2022-07-19 21:59:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:42,623 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 171 transitions. [2022-07-19 21:59:42,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:59:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 171 transitions. [2022-07-19 21:59:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 21:59:42,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:42,624 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:42,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:42,839 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 [2022-07-19 21:59:42,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash -358018689, now seen corresponding path program 2 times [2022-07-19 21:59:42,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:42,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4238433] [2022-07-19 21:59:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:42,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 21:59:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:59:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 21:59:43,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:43,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4238433] [2022-07-19 21:59:43,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4238433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:43,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958561323] [2022-07-19 21:59:43,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:59:43,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:43,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:43,256 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) [2022-07-19 21:59:43,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:59:43,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:59:43,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:59:43,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 21:59:43,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 21:59:43,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:43,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958561323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:43,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:43,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-19 21:59:43,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001081029] [2022-07-19 21:59:43,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:59:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:59:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:59:43,907 INFO L87 Difference]: Start difference. First operand 130 states and 171 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:59:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:44,052 INFO L93 Difference]: Finished difference Result 221 states and 292 transitions. [2022-07-19 21:59:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:59:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 98 [2022-07-19 21:59:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:44,054 INFO L225 Difference]: With dead ends: 221 [2022-07-19 21:59:44,054 INFO L226 Difference]: Without dead ends: 127 [2022-07-19 21:59:44,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:59:44,056 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 80 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:44,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 895 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-19 21:59:44,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-19 21:59:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 83 states have internal predecessors, (98), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-19 21:59:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2022-07-19 21:59:44,065 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 98 [2022-07-19 21:59:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:44,065 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2022-07-19 21:59:44,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:59:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2022-07-19 21:59:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 21:59:44,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:44,067 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:44,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:44,291 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 [2022-07-19 21:59:44,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1323939499, now seen corresponding path program 1 times [2022-07-19 21:59:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:44,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902433559] [2022-07-19 21:59:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:44,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:59:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-19 21:59:44,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:44,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902433559] [2022-07-19 21:59:44,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902433559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:44,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:44,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:59:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620505972] [2022-07-19 21:59:44,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:44,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:59:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:59:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:59:44,660 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 21:59:45,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:45,238 INFO L93 Difference]: Finished difference Result 139 states and 182 transitions. [2022-07-19 21:59:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:59:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2022-07-19 21:59:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:45,240 INFO L225 Difference]: With dead ends: 139 [2022-07-19 21:59:45,240 INFO L226 Difference]: Without dead ends: 137 [2022-07-19 21:59:45,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:59:45,241 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 88 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:45,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 524 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:59:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-07-19 21:59:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2022-07-19 21:59:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 90 states have internal predecessors, (104), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-19 21:59:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 179 transitions. [2022-07-19 21:59:45,252 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 179 transitions. Word has length 110 [2022-07-19 21:59:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:45,253 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 179 transitions. [2022-07-19 21:59:45,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 21:59:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2022-07-19 21:59:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 21:59:45,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:45,255 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:45,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:59:45,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2136545501, now seen corresponding path program 1 times [2022-07-19 21:59:45,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:45,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857835584] [2022-07-19 21:59:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:45,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:59:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:45,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857835584] [2022-07-19 21:59:45,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857835584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892556298] [2022-07-19 21:59:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:45,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:45,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:45,856 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) [2022-07-19 21:59:45,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:59:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:59:46,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:59:50,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:50,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892556298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:50,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:50,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-07-19 21:59:50,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069396935] [2022-07-19 21:59:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:50,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:59:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:59:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=126, Unknown=2, NotChecked=0, Total=156 [2022-07-19 21:59:50,493 INFO L87 Difference]: Start difference. First operand 136 states and 179 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 21:59:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:50,666 INFO L93 Difference]: Finished difference Result 263 states and 361 transitions. [2022-07-19 21:59:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:50,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2022-07-19 21:59:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:50,669 INFO L225 Difference]: With dead ends: 263 [2022-07-19 21:59:50,669 INFO L226 Difference]: Without dead ends: 152 [2022-07-19 21:59:50,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=34, Invalid=146, Unknown=2, NotChecked=0, Total=182 [2022-07-19 21:59:50,670 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 23 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:50,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 571 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-07-19 21:59:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-19 21:59:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 141. [2022-07-19 21:59:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.1935483870967742) internal successors, (111), 95 states have internal predecessors, (111), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-19 21:59:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2022-07-19 21:59:50,693 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 114 [2022-07-19 21:59:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:50,693 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2022-07-19 21:59:50,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 21:59:50,694 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2022-07-19 21:59:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 21:59:50,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:50,695 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:50,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:50,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:50,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:50,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1900256357, now seen corresponding path program 1 times [2022-07-19 21:59:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:50,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417055587] [2022-07-19 21:59:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:59:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 21:59:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417055587] [2022-07-19 21:59:51,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417055587] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107050825] [2022-07-19 21:59:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:51,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:51,482 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) [2022-07-19 21:59:51,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:59:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-19 21:59:51,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:52,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:59:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:59:52,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:52,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107050825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:52,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:52,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-19 21:59:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971666605] [2022-07-19 21:59:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:52,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:59:52,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:59:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:59:52,373 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 21:59:52,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:52,493 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2022-07-19 21:59:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:59:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2022-07-19 21:59:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:52,495 INFO L225 Difference]: With dead ends: 280 [2022-07-19 21:59:52,495 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 21:59:52,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:59:52,496 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 32 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:52,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1020 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-07-19 21:59:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 21:59:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 21:59:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-19 21:59:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2022-07-19 21:59:52,507 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 114 [2022-07-19 21:59:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:52,508 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2022-07-19 21:59:52,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 21:59:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2022-07-19 21:59:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 21:59:52,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:52,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:52,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:52,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:52,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -333498407, now seen corresponding path program 1 times [2022-07-19 21:59:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:52,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081408224] [2022-07-19 21:59:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 21:59:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:59:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-19 21:59:52,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081408224] [2022-07-19 21:59:52,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081408224] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390603039] [2022-07-19 21:59:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:52,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:52,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:52,958 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) [2022-07-19 21:59:52,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:59:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 21:59:53,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:53,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390603039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:53,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:53,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:53,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262823562] [2022-07-19 21:59:53,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:53,442 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:53,466 INFO L93 Difference]: Finished difference Result 289 states and 389 transitions. [2022-07-19 21:59:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-19 21:59:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:53,468 INFO L225 Difference]: With dead ends: 289 [2022-07-19 21:59:53,468 INFO L226 Difference]: Without dead ends: 169 [2022-07-19 21:59:53,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:53,470 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 20 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:53,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-19 21:59:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-07-19 21:59:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 105 states have internal predecessors, (125), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2022-07-19 21:59:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2022-07-19 21:59:53,481 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 114 [2022-07-19 21:59:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:53,481 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2022-07-19 21:59:53,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2022-07-19 21:59:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 21:59:53,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:53,483 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:53,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:53,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:53,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash -320167147, now seen corresponding path program 2 times [2022-07-19 21:59:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:53,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346194600] [2022-07-19 21:59:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:59:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:59:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:59:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:59:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 21:59:54,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:54,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346194600] [2022-07-19 21:59:54,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346194600] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:54,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115076729] [2022-07-19 21:59:54,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:59:54,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:54,128 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) [2022-07-19 21:59:54,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:59:54,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:59:54,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:59:54,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-19 21:59:54,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 21:59:55,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:59:55,974 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 21:59:55,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 21:59:55,985 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-19 21:59:55,986 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 24 treesize of output 12 [2022-07-19 21:59:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 21:59:56,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115076729] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:59:56,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:59:56,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-19 21:59:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228490453] [2022-07-19 21:59:56,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:59:56,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:59:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:59:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:59:56,040 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-19 21:59:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:58,242 INFO L93 Difference]: Finished difference Result 346 states and 468 transitions. [2022-07-19 21:59:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 21:59:58,242 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 118 [2022-07-19 21:59:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:58,245 INFO L225 Difference]: With dead ends: 346 [2022-07-19 21:59:58,245 INFO L226 Difference]: Without dead ends: 226 [2022-07-19 21:59:58,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 245 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=442, Invalid=2750, Unknown=0, NotChecked=0, Total=3192 [2022-07-19 21:59:58,247 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 271 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:58,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 930 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2019 Invalid, 0 Unknown, 350 Unchecked, 1.3s Time] [2022-07-19 21:59:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-19 21:59:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 192. [2022-07-19 21:59:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 138 states have (on average 1.210144927536232) internal successors, (167), 140 states have internal predecessors, (167), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-19 21:59:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 253 transitions. [2022-07-19 21:59:58,260 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 253 transitions. Word has length 118 [2022-07-19 21:59:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:58,260 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 253 transitions. [2022-07-19 21:59:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.28) internal successors, (107), 24 states have internal predecessors, (107), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-19 21:59:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 253 transitions. [2022-07-19 21:59:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 21:59:58,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:58,262 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:58,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:58,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -916454254, now seen corresponding path program 1 times [2022-07-19 21:59:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:58,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916439935] [2022-07-19 21:59:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:58,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 21:59:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 21:59:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 21:59:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 21:59:58,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916439935] [2022-07-19 21:59:58,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916439935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885644048] [2022-07-19 21:59:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:58,699 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) [2022-07-19 21:59:58,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:59:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:59,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-19 21:59:59,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:59,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885644048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:59,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271859131] [2022-07-19 21:59:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:59,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:59,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:59,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:59,212 INFO L87 Difference]: Start difference. First operand 192 states and 253 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:59,242 INFO L93 Difference]: Finished difference Result 365 states and 490 transitions. [2022-07-19 21:59:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:59,242 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-19 21:59:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:59,244 INFO L225 Difference]: With dead ends: 365 [2022-07-19 21:59:59,244 INFO L226 Difference]: Without dead ends: 203 [2022-07-19 21:59:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:59,245 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 9 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 480 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-19 21:59:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2022-07-19 21:59:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 142 states have internal predecessors, (167), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-19 21:59:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 253 transitions. [2022-07-19 21:59:59,258 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 253 transitions. Word has length 120 [2022-07-19 21:59:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:59,258 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 253 transitions. [2022-07-19 21:59:59,258 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 253 transitions. [2022-07-19 21:59:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 21:59:59,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:59,260 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:59,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:59,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 21:59:59,487 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash -915873842, now seen corresponding path program 1 times [2022-07-19 21:59:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:59,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263474430] [2022-07-19 21:59:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 21:59:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 21:59:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 21:59:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 21:59:59,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263474430] [2022-07-19 21:59:59,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263474430] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283492709] [2022-07-19 21:59:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:59,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:59,697 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) [2022-07-19 21:59:59,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 22:00:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:00:00,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 22:00:00,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:00,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283492709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:00,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:00,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 22:00:00,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222242201] [2022-07-19 22:00:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:00,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:00:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:00:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:00:00,143 INFO L87 Difference]: Start difference. First operand 194 states and 253 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 22:00:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:00,169 INFO L93 Difference]: Finished difference Result 372 states and 502 transitions. [2022-07-19 22:00:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:00:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-19 22:00:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:00,171 INFO L225 Difference]: With dead ends: 372 [2022-07-19 22:00:00,171 INFO L226 Difference]: Without dead ends: 208 [2022-07-19 22:00:00,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:00:00,173 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 34 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:00,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 478 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:00:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-19 22:00:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 190. [2022-07-19 22:00:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 138 states have internal predecessors, (159), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-19 22:00:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 245 transitions. [2022-07-19 22:00:00,184 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 245 transitions. Word has length 120 [2022-07-19 22:00:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:00,184 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 245 transitions. [2022-07-19 22:00:00,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 22:00:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 245 transitions. [2022-07-19 22:00:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 22:00:00,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:00,186 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 22:00:00,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:00,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:00,409 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1910567540, now seen corresponding path program 2 times [2022-07-19 22:00:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:00,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471602943] [2022-07-19 22:00:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:00:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:00:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:00:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:00:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 22:00:00,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:00,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471602943] [2022-07-19 22:00:00,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471602943] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:00,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452029587] [2022-07-19 22:00:00,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:00:00,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:00,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:00,960 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) [2022-07-19 22:00:00,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 22:00:01,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:00:01,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:01,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 22:00:01,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 22:00:02,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:02,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-19 22:00:02,718 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:00:02,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 22:00:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 22:00:02,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452029587] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:02,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:02,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 24 [2022-07-19 22:00:02,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035233939] [2022-07-19 22:00:02,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:02,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 22:00:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 22:00:02,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:00:02,752 INFO L87 Difference]: Start difference. First operand 190 states and 245 transitions. Second operand has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 3 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 22:00:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:04,541 INFO L93 Difference]: Finished difference Result 339 states and 433 transitions. [2022-07-19 22:00:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 22:00:04,541 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 3 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-07-19 22:00:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:04,543 INFO L225 Difference]: With dead ends: 339 [2022-07-19 22:00:04,543 INFO L226 Difference]: Without dead ends: 244 [2022-07-19 22:00:04,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 247 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 22:00:04,545 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 322 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:04,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 579 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1241 Invalid, 0 Unknown, 222 Unchecked, 1.0s Time] [2022-07-19 22:00:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-07-19 22:00:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2022-07-19 22:00:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 168 states have internal predecessors, (193), 41 states have call successors, (41), 16 states have call predecessors, (41), 18 states have return successors, (58), 40 states have call predecessors, (58), 40 states have call successors, (58) [2022-07-19 22:00:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2022-07-19 22:00:04,558 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 120 [2022-07-19 22:00:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:04,558 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2022-07-19 22:00:04,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 3 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 22:00:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2022-07-19 22:00:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 22:00:04,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:04,560 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:04,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:04,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 22:00:04,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:04,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash 537886416, now seen corresponding path program 1 times [2022-07-19 22:00:04,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:04,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814992612] [2022-07-19 22:00:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:00:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:00:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:00:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:00:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 22:00:05,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:05,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814992612] [2022-07-19 22:00:05,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814992612] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:05,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496448345] [2022-07-19 22:00:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:05,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:05,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:05,271 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) [2022-07-19 22:00:05,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 22:00:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-19 22:00:05,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:05,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:00:06,077 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:06,078 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 [2022-07-19 22:00:06,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 22:00:06,136 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:06,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:00:06,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-19 22:00:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 55 proven. 58 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 22:00:06,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:07,527 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:00:07,528 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 24 treesize of output 19 [2022-07-19 22:00:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 22:00:07,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496448345] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:07,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:07,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 12] total 41 [2022-07-19 22:00:07,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288201440] [2022-07-19 22:00:07,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:07,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-19 22:00:07,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:07,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-19 22:00:07,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1494, Unknown=0, NotChecked=0, Total=1640 [2022-07-19 22:00:07,603 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand has 41 states, 39 states have (on average 4.17948717948718) internal successors, (163), 38 states have internal predecessors, (163), 11 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2022-07-19 22:00:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:13,293 INFO L93 Difference]: Finished difference Result 564 states and 773 transitions. [2022-07-19 22:00:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-19 22:00:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 4.17948717948718) internal successors, (163), 38 states have internal predecessors, (163), 11 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) Word has length 120 [2022-07-19 22:00:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:13,296 INFO L225 Difference]: With dead ends: 564 [2022-07-19 22:00:13,296 INFO L226 Difference]: Without dead ends: 385 [2022-07-19 22:00:13,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 248 SyntacticMatches, 8 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2652 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=959, Invalid=8941, Unknown=0, NotChecked=0, Total=9900 [2022-07-19 22:00:13,301 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 479 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 6158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1314 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:13,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1487 Invalid, 6158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 4462 Invalid, 0 Unknown, 1314 Unchecked, 3.3s Time] [2022-07-19 22:00:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-19 22:00:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 295. [2022-07-19 22:00:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 204 states have (on average 1.1568627450980393) internal successors, (236), 206 states have internal predecessors, (236), 67 states have call successors, (67), 22 states have call predecessors, (67), 23 states have return successors, (100), 66 states have call predecessors, (100), 66 states have call successors, (100) [2022-07-19 22:00:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 403 transitions. [2022-07-19 22:00:13,339 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 403 transitions. Word has length 120 [2022-07-19 22:00:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 403 transitions. [2022-07-19 22:00:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 4.17948717948718) internal successors, (163), 38 states have internal predecessors, (163), 11 states have call successors, (30), 6 states have call predecessors, (30), 10 states have return successors, (27), 10 states have call predecessors, (27), 9 states have call successors, (27) [2022-07-19 22:00:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 403 transitions. [2022-07-19 22:00:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:00:13,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:13,343 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:13,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:13,558 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,SelfDestructingSolverStorable12 [2022-07-19 22:00:13,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash 190117968, now seen corresponding path program 3 times [2022-07-19 22:00:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:13,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62444413] [2022-07-19 22:00:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:00:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:00:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 22:00:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:13,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62444413] [2022-07-19 22:00:13,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62444413] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:13,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637394295] [2022-07-19 22:00:13,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:00:13,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:13,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:13,893 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) [2022-07-19 22:00:13,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 22:00:14,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 22:00:14,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:14,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 22:00:14,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 22:00:15,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637394295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:15,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-19 22:00:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002800061] [2022-07-19 22:00:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:15,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:00:15,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:00:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:00:15,214 INFO L87 Difference]: Start difference. First operand 295 states and 403 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 22:00:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:15,497 INFO L93 Difference]: Finished difference Result 481 states and 654 transitions. [2022-07-19 22:00:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:00:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-07-19 22:00:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:15,500 INFO L225 Difference]: With dead ends: 481 [2022-07-19 22:00:15,501 INFO L226 Difference]: Without dead ends: 323 [2022-07-19 22:00:15,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:00:15,502 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 36 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:15,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1316 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 90 Invalid, 0 Unknown, 167 Unchecked, 0.1s Time] [2022-07-19 22:00:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-19 22:00:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 311. [2022-07-19 22:00:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 216 states have (on average 1.1342592592592593) internal successors, (245), 220 states have internal predecessors, (245), 71 states have call successors, (71), 24 states have call predecessors, (71), 23 states have return successors, (106), 66 states have call predecessors, (106), 70 states have call successors, (106) [2022-07-19 22:00:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 422 transitions. [2022-07-19 22:00:15,525 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 422 transitions. Word has length 124 [2022-07-19 22:00:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 422 transitions. [2022-07-19 22:00:15,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 22:00:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 422 transitions. [2022-07-19 22:00:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:00:15,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:15,528 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:15,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:15,743 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,SelfDestructingSolverStorable13 [2022-07-19 22:00:15,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 408972686, now seen corresponding path program 1 times [2022-07-19 22:00:15,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:15,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197843004] [2022-07-19 22:00:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:00:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:00:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 22:00:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197843004] [2022-07-19 22:00:16,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197843004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144130009] [2022-07-19 22:00:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:16,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:16,120 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) [2022-07-19 22:00:16,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 22:00:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-19 22:00:16,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:16,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:00:16,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:16,880 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 22 treesize of output 21 [2022-07-19 22:00:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 22:00:17,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:17,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144130009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:17,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:17,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2022-07-19 22:00:17,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300162477] [2022-07-19 22:00:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:17,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 22:00:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 22:00:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:00:17,097 INFO L87 Difference]: Start difference. First operand 311 states and 422 transitions. Second operand has 13 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 22:00:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:17,310 INFO L93 Difference]: Finished difference Result 573 states and 764 transitions. [2022-07-19 22:00:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:00:17,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 124 [2022-07-19 22:00:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:17,313 INFO L225 Difference]: With dead ends: 573 [2022-07-19 22:00:17,313 INFO L226 Difference]: Without dead ends: 382 [2022-07-19 22:00:17,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:17,315 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 47 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:17,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1771 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 136 Invalid, 0 Unknown, 176 Unchecked, 0.2s Time] [2022-07-19 22:00:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-19 22:00:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 337. [2022-07-19 22:00:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 240 states have (on average 1.1416666666666666) internal successors, (274), 245 states have internal predecessors, (274), 72 states have call successors, (72), 25 states have call predecessors, (72), 24 states have return successors, (108), 66 states have call predecessors, (108), 71 states have call successors, (108) [2022-07-19 22:00:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 454 transitions. [2022-07-19 22:00:17,335 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 454 transitions. Word has length 124 [2022-07-19 22:00:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:17,336 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 454 transitions. [2022-07-19 22:00:17,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 22:00:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 454 transitions. [2022-07-19 22:00:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:00:17,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:17,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:17,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:17,559 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,SelfDestructingSolverStorable14 [2022-07-19 22:00:17,559 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1549602100, now seen corresponding path program 1 times [2022-07-19 22:00:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695047332] [2022-07-19 22:00:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:00:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:00:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 22:00:17,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:17,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695047332] [2022-07-19 22:00:17,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695047332] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:17,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777877786] [2022-07-19 22:00:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:17,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:17,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:17,900 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) [2022-07-19 22:00:17,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 22:00:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:18,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 22:00:18,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:18,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:00:18,953 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 22:00:18,953 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 29 treesize of output 13 [2022-07-19 22:00:18,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 22:00:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 22:00:18,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:18,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777877786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:18,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:18,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 23 [2022-07-19 22:00:18,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732807212] [2022-07-19 22:00:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:00:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:00:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:18,996 INFO L87 Difference]: Start difference. First operand 337 states and 454 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 11 states have internal predecessors, (66), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 22:00:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:19,130 INFO L93 Difference]: Finished difference Result 587 states and 790 transitions. [2022-07-19 22:00:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:00:19,131 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 11 states have internal predecessors, (66), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 124 [2022-07-19 22:00:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:19,133 INFO L225 Difference]: With dead ends: 587 [2022-07-19 22:00:19,134 INFO L226 Difference]: Without dead ends: 408 [2022-07-19 22:00:19,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:00:19,135 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 59 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:19,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1160 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 210 Unchecked, 0.1s Time] [2022-07-19 22:00:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-19 22:00:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 375. [2022-07-19 22:00:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 270 states have (on average 1.1296296296296295) internal successors, (305), 275 states have internal predecessors, (305), 76 states have call successors, (76), 29 states have call predecessors, (76), 28 states have return successors, (113), 70 states have call predecessors, (113), 75 states have call successors, (113) [2022-07-19 22:00:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 494 transitions. [2022-07-19 22:00:19,159 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 494 transitions. Word has length 124 [2022-07-19 22:00:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:19,160 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 494 transitions. [2022-07-19 22:00:19,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 11 states have internal predecessors, (66), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 22:00:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 494 transitions. [2022-07-19 22:00:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 22:00:19,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:19,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:19,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:19,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:19,375 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:19,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash -120279672, now seen corresponding path program 1 times [2022-07-19 22:00:19,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:19,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736240967] [2022-07-19 22:00:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:19,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:00:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:00:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:00:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:00:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-19 22:00:19,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736240967] [2022-07-19 22:00:19,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736240967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641860800] [2022-07-19 22:00:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:19,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:19,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:19,657 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:19,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 22:00:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:00:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 22:00:20,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:20,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641860800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:20,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:20,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 22:00:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248005851] [2022-07-19 22:00:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:00:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:00:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:00:20,240 INFO L87 Difference]: Start difference. First operand 375 states and 494 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 22:00:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:20,369 INFO L93 Difference]: Finished difference Result 628 states and 851 transitions. [2022-07-19 22:00:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:20,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 128 [2022-07-19 22:00:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:20,372 INFO L225 Difference]: With dead ends: 628 [2022-07-19 22:00:20,372 INFO L226 Difference]: Without dead ends: 373 [2022-07-19 22:00:20,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:00:20,374 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 12 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:20,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1210 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:00:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-19 22:00:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-07-19 22:00:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 267 states have (on average 1.1161048689138577) internal successors, (298), 273 states have internal predecessors, (298), 76 states have call successors, (76), 29 states have call predecessors, (76), 29 states have return successors, (118), 70 states have call predecessors, (118), 75 states have call successors, (118) [2022-07-19 22:00:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 492 transitions. [2022-07-19 22:00:20,395 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 492 transitions. Word has length 128 [2022-07-19 22:00:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:20,396 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 492 transitions. [2022-07-19 22:00:20,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 22:00:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 492 transitions. [2022-07-19 22:00:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 22:00:20,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:20,398 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:20,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:20,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 22:00:20,624 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1836872170, now seen corresponding path program 1 times [2022-07-19 22:00:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:20,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058121865] [2022-07-19 22:00:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:20,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 22:00:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:00:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:00:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:00:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:00:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:00:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:00:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:00:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:00:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 22:00:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058121865] [2022-07-19 22:00:20,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058121865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:20,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549388761] [2022-07-19 22:00:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:20,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:20,928 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:20,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 22:00:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:21,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 22:00:21,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:21,605 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 [2022-07-19 22:00:21,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:00:22,048 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 22:00:22,049 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 29 treesize of output 13 [2022-07-19 22:00:22,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 22:00:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 22:00:22,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:22,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549388761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:22,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:22,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 23 [2022-07-19 22:00:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22761978] [2022-07-19 22:00:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:22,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:00:22,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:00:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:22,086 INFO L87 Difference]: Start difference. First operand 373 states and 492 transitions. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 11 states have internal predecessors, (69), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 22:00:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:22,627 INFO L93 Difference]: Finished difference Result 588 states and 786 transitions. [2022-07-19 22:00:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:00:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 11 states have internal predecessors, (69), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 129 [2022-07-19 22:00:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:22,630 INFO L225 Difference]: With dead ends: 588 [2022-07-19 22:00:22,630 INFO L226 Difference]: Without dead ends: 404 [2022-07-19 22:00:22,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:00:22,632 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 273 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 588 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:22,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1022 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 544 Invalid, 0 Unknown, 588 Unchecked, 0.4s Time] [2022-07-19 22:00:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-19 22:00:22,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 350. [2022-07-19 22:00:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 247 states have (on average 1.1174089068825912) internal successors, (276), 254 states have internal predecessors, (276), 74 states have call successors, (74), 28 states have call predecessors, (74), 28 states have return successors, (115), 67 states have call predecessors, (115), 73 states have call successors, (115) [2022-07-19 22:00:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 465 transitions. [2022-07-19 22:00:22,653 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 465 transitions. Word has length 129 [2022-07-19 22:00:22,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:22,654 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 465 transitions. [2022-07-19 22:00:22,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 11 states have internal predecessors, (69), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 22:00:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 465 transitions. [2022-07-19 22:00:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 22:00:22,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:22,656 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:22,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:22,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 22:00:22,878 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1352348209, now seen corresponding path program 1 times [2022-07-19 22:00:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:22,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574980584] [2022-07-19 22:00:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:00:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:00:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:00:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 22:00:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:00:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-19 22:00:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574980584] [2022-07-19 22:00:23,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574980584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237376857] [2022-07-19 22:00:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:23,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:23,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:23,167 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:23,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 22:00:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 22:00:23,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:23,620 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 [2022-07-19 22:00:23,806 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 22:00:23,806 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 28 treesize of output 12 [2022-07-19 22:00:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-19 22:00:23,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:23,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237376857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:23,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:23,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-07-19 22:00:23,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337646613] [2022-07-19 22:00:23,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:23,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:00:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:00:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 22:00:23,825 INFO L87 Difference]: Start difference. First operand 350 states and 465 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 22:00:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:24,114 INFO L93 Difference]: Finished difference Result 572 states and 773 transitions. [2022-07-19 22:00:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 22:00:24,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 131 [2022-07-19 22:00:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:24,117 INFO L225 Difference]: With dead ends: 572 [2022-07-19 22:00:24,118 INFO L226 Difference]: Without dead ends: 375 [2022-07-19 22:00:24,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:24,120 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 52 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:24,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 971 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-07-19 22:00:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-19 22:00:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 351. [2022-07-19 22:00:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 249 states have (on average 1.1124497991967872) internal successors, (277), 256 states have internal predecessors, (277), 72 states have call successors, (72), 28 states have call predecessors, (72), 29 states have return successors, (122), 66 states have call predecessors, (122), 71 states have call successors, (122) [2022-07-19 22:00:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 471 transitions. [2022-07-19 22:00:24,142 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 471 transitions. Word has length 131 [2022-07-19 22:00:24,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:24,142 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 471 transitions. [2022-07-19 22:00:24,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 22:00:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 471 transitions. [2022-07-19 22:00:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 22:00:24,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:24,145 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:24,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:24,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:24,370 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1021256771, now seen corresponding path program 2 times [2022-07-19 22:00:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:24,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074172856] [2022-07-19 22:00:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:00:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:00:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 22:00:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074172856] [2022-07-19 22:00:24,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074172856] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142675217] [2022-07-19 22:00:24,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:00:24,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:24,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:24,732 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:24,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 22:00:25,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:00:25,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:25,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-19 22:00:25,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:25,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-19 22:00:25,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:25,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-19 22:00:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 53 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 22:00:26,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:27,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142675217] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:27,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:00:27,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 26 [2022-07-19 22:00:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119833525] [2022-07-19 22:00:27,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:27,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 22:00:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 22:00:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=950, Unknown=1, NotChecked=0, Total=1056 [2022-07-19 22:00:27,637 INFO L87 Difference]: Start difference. First operand 351 states and 471 transitions. Second operand has 26 states, 24 states have (on average 5.708333333333333) internal successors, (137), 23 states have internal predecessors, (137), 8 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-19 22:00:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:30,001 INFO L93 Difference]: Finished difference Result 616 states and 816 transitions. [2022-07-19 22:00:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-19 22:00:30,002 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.708333333333333) internal successors, (137), 23 states have internal predecessors, (137), 8 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 130 [2022-07-19 22:00:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:30,004 INFO L225 Difference]: With dead ends: 616 [2022-07-19 22:00:30,004 INFO L226 Difference]: Without dead ends: 363 [2022-07-19 22:00:30,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 179 SyntacticMatches, 14 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=489, Invalid=4066, Unknown=1, NotChecked=0, Total=4556 [2022-07-19 22:00:30,007 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 184 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:30,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1701 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2211 Invalid, 0 Unknown, 1211 Unchecked, 1.2s Time] [2022-07-19 22:00:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-19 22:00:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 326. [2022-07-19 22:00:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 240 states have (on average 1.1041666666666667) internal successors, (265), 247 states have internal predecessors, (265), 56 states have call successors, (56), 25 states have call predecessors, (56), 29 states have return successors, (78), 53 states have call predecessors, (78), 55 states have call successors, (78) [2022-07-19 22:00:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2022-07-19 22:00:30,042 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 130 [2022-07-19 22:00:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:30,042 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2022-07-19 22:00:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.708333333333333) internal successors, (137), 23 states have internal predecessors, (137), 8 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-19 22:00:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2022-07-19 22:00:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 22:00:30,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:30,044 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:30,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:30,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:30,255 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash -78510352, now seen corresponding path program 1 times [2022-07-19 22:00:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773340060] [2022-07-19 22:00:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:30,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:00:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:00:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:00:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 22:00:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:30,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773340060] [2022-07-19 22:00:30,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773340060] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:30,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000262851] [2022-07-19 22:00:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:30,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:30,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:30,662 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:30,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 22:00:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:31,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-19 22:00:31,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:31,313 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:31,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-19 22:00:31,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 22:00:31,392 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-19 22:00:31,392 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 35 treesize of output 34 [2022-07-19 22:00:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 79 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 22:00:31,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 22:00:32,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000262851] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:32,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:32,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 12] total 35 [2022-07-19 22:00:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362844822] [2022-07-19 22:00:32,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:32,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 22:00:32,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 22:00:32,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 22:00:32,715 INFO L87 Difference]: Start difference. First operand 326 states and 399 transitions. Second operand has 35 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 11 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-19 22:00:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:35,660 INFO L93 Difference]: Finished difference Result 598 states and 757 transitions. [2022-07-19 22:00:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 22:00:35,661 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 11 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) Word has length 132 [2022-07-19 22:00:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:35,663 INFO L225 Difference]: With dead ends: 598 [2022-07-19 22:00:35,663 INFO L226 Difference]: Without dead ends: 462 [2022-07-19 22:00:35,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 265 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=502, Invalid=3530, Unknown=0, NotChecked=0, Total=4032 [2022-07-19 22:00:35,666 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 296 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:35,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 863 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2437 Invalid, 0 Unknown, 536 Unchecked, 1.7s Time] [2022-07-19 22:00:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-19 22:00:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 399. [2022-07-19 22:00:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 301 states have (on average 1.1096345514950166) internal successors, (334), 310 states have internal predecessors, (334), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (101), 59 states have call predecessors, (101), 61 states have call successors, (101) [2022-07-19 22:00:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 497 transitions. [2022-07-19 22:00:35,696 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 497 transitions. Word has length 132 [2022-07-19 22:00:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:35,697 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 497 transitions. [2022-07-19 22:00:35,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 11 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (27), 8 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-19 22:00:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 497 transitions. [2022-07-19 22:00:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 22:00:35,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:35,700 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:35,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:35,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:35,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash 398509804, now seen corresponding path program 1 times [2022-07-19 22:00:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:35,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203885115] [2022-07-19 22:00:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:00:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:00:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:00:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-19 22:00:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:36,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203885115] [2022-07-19 22:00:36,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203885115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:36,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:36,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:00:36,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487295023] [2022-07-19 22:00:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:00:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:00:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:00:36,182 INFO L87 Difference]: Start difference. First operand 399 states and 497 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:00:36,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:36,599 INFO L93 Difference]: Finished difference Result 516 states and 641 transitions. [2022-07-19 22:00:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:00:36,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 132 [2022-07-19 22:00:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:36,604 INFO L225 Difference]: With dead ends: 516 [2022-07-19 22:00:36,604 INFO L226 Difference]: Without dead ends: 391 [2022-07-19 22:00:36,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:00:36,605 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 95 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:36,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 280 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:00:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-19 22:00:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2022-07-19 22:00:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 293 states have (on average 1.098976109215017) internal successors, (322), 302 states have internal predecessors, (322), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (101), 59 states have call predecessors, (101), 61 states have call successors, (101) [2022-07-19 22:00:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 485 transitions. [2022-07-19 22:00:36,633 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 485 transitions. Word has length 132 [2022-07-19 22:00:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:36,633 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 485 transitions. [2022-07-19 22:00:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:00:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 485 transitions. [2022-07-19 22:00:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 22:00:36,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:36,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:36,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 22:00:36,636 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:36,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 345136370, now seen corresponding path program 1 times [2022-07-19 22:00:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380468788] [2022-07-19 22:00:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:00:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:00:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:00:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 22:00:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380468788] [2022-07-19 22:00:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380468788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029561943] [2022-07-19 22:00:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:37,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:37,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:37,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:37,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 22:00:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:37,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-19 22:00:37,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:37,938 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:37,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-19 22:00:37,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 22:00:38,004 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-19 22:00:38,004 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 35 treesize of output 34 [2022-07-19 22:00:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 82 proven. 48 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 22:00:45,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 22:00:45,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029561943] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:45,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:45,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 12] total 45 [2022-07-19 22:00:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298737996] [2022-07-19 22:00:45,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-19 22:00:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-19 22:00:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1826, Unknown=1, NotChecked=0, Total=1980 [2022-07-19 22:00:45,948 INFO L87 Difference]: Start difference. First operand 391 states and 485 transitions. Second operand has 45 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 42 states have internal predecessors, (161), 16 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-19 22:00:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:52,550 INFO L93 Difference]: Finished difference Result 710 states and 879 transitions. [2022-07-19 22:00:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-19 22:00:52,550 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 42 states have internal predecessors, (161), 16 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) Word has length 132 [2022-07-19 22:00:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:52,553 INFO L225 Difference]: With dead ends: 710 [2022-07-19 22:00:52,553 INFO L226 Difference]: Without dead ends: 486 [2022-07-19 22:00:52,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 265 SyntacticMatches, 13 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2819 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1037, Invalid=9264, Unknown=1, NotChecked=0, Total=10302 [2022-07-19 22:00:52,557 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 611 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 5260 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 6830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 5260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1069 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:52,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 859 Invalid, 6830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 5260 Invalid, 0 Unknown, 1069 Unchecked, 3.8s Time] [2022-07-19 22:00:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-07-19 22:00:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 397. [2022-07-19 22:00:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 303 states have (on average 1.0858085808580857) internal successors, (329), 310 states have internal predecessors, (329), 58 states have call successors, (58), 30 states have call predecessors, (58), 35 states have return successors, (77), 56 states have call predecessors, (77), 57 states have call successors, (77) [2022-07-19 22:00:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 464 transitions. [2022-07-19 22:00:52,582 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 464 transitions. Word has length 132 [2022-07-19 22:00:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:52,582 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 464 transitions. [2022-07-19 22:00:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 3.8333333333333335) internal successors, (161), 42 states have internal predecessors, (161), 16 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-19 22:00:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 464 transitions. [2022-07-19 22:00:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 22:00:52,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:52,584 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:52,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-19 22:00:52,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-19 22:00:52,801 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash -619042068, now seen corresponding path program 1 times [2022-07-19 22:00:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:52,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235425656] [2022-07-19 22:00:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:00:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:00:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:00:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:00:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:00:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:00:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 22:00:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:53,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235425656] [2022-07-19 22:00:53,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235425656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:53,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:53,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:00:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34733311] [2022-07-19 22:00:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:53,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:00:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:00:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:00:53,005 INFO L87 Difference]: Start difference. First operand 397 states and 464 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 22:00:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:53,483 INFO L93 Difference]: Finished difference Result 483 states and 571 transitions. [2022-07-19 22:00:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2022-07-19 22:00:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:53,489 INFO L225 Difference]: With dead ends: 483 [2022-07-19 22:00:53,489 INFO L226 Difference]: Without dead ends: 428 [2022-07-19 22:00:53,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:00:53,490 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 136 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:53,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 387 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:00:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-07-19 22:00:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 404. [2022-07-19 22:00:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 308 states have (on average 1.0844155844155845) internal successors, (334), 316 states have internal predecessors, (334), 58 states have call successors, (58), 30 states have call predecessors, (58), 37 states have return successors, (79), 57 states have call predecessors, (79), 57 states have call successors, (79) [2022-07-19 22:00:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 471 transitions. [2022-07-19 22:00:53,515 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 471 transitions. Word has length 134 [2022-07-19 22:00:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:53,516 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 471 transitions. [2022-07-19 22:00:53,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 22:00:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 471 transitions. [2022-07-19 22:00:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 22:00:53,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:53,517 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:53,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 22:00:53,518 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 729890910, now seen corresponding path program 1 times [2022-07-19 22:00:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728559263] [2022-07-19 22:00:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:00:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:00:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:00:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:00:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:54,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:00:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 26 proven. 14 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 22:00:54,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:54,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728559263] [2022-07-19 22:00:54,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728559263] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:54,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201199317] [2022-07-19 22:00:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:54,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:54,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:54,080 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:54,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 22:00:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:54,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-19 22:00:54,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:54,656 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 [2022-07-19 22:00:55,047 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:55,048 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 16 treesize of output 22 [2022-07-19 22:00:55,052 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 3 [2022-07-19 22:00:55,064 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:55,064 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 [2022-07-19 22:00:55,068 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 [2022-07-19 22:00:55,132 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:55,132 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 20 treesize of output 26 [2022-07-19 22:00:55,143 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:55,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:00:55,168 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 [2022-07-19 22:00:55,170 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 [2022-07-19 22:00:55,441 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 [2022-07-19 22:00:55,451 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:55,451 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 16 treesize of output 22 [2022-07-19 22:00:55,463 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:55,463 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 16 treesize of output 22 [2022-07-19 22:00:55,467 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 3 [2022-07-19 22:00:55,469 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 3 [2022-07-19 22:01:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 57 proven. 89 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 22:01:02,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 22:01:04,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201199317] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:01:04,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:01:04,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 35, 13] total 61 [2022-07-19 22:01:04,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738512051] [2022-07-19 22:01:04,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-19 22:01:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-19 22:01:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3421, Unknown=1, NotChecked=0, Total=3660 [2022-07-19 22:01:04,009 INFO L87 Difference]: Start difference. First operand 404 states and 471 transitions. Second operand has 61 states, 57 states have (on average 3.543859649122807) internal successors, (202), 55 states have internal predecessors, (202), 19 states have call successors, (42), 9 states have call predecessors, (42), 13 states have return successors, (38), 15 states have call predecessors, (38), 18 states have call successors, (38) [2022-07-19 22:01:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:11,678 INFO L93 Difference]: Finished difference Result 694 states and 854 transitions. [2022-07-19 22:01:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-19 22:01:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 57 states have (on average 3.543859649122807) internal successors, (202), 55 states have internal predecessors, (202), 19 states have call successors, (42), 9 states have call predecessors, (42), 13 states have return successors, (38), 15 states have call predecessors, (38), 18 states have call successors, (38) Word has length 133 [2022-07-19 22:01:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:11,681 INFO L225 Difference]: With dead ends: 694 [2022-07-19 22:01:11,681 INFO L226 Difference]: Without dead ends: 463 [2022-07-19 22:01:11,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 257 SyntacticMatches, 11 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3644 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=764, Invalid=10576, Unknown=2, NotChecked=0, Total=11342 [2022-07-19 22:01:11,685 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 497 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 6104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 822 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:11,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1727 Invalid, 6104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 4920 Invalid, 0 Unknown, 822 Unchecked, 3.5s Time] [2022-07-19 22:01:11,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-19 22:01:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 368. [2022-07-19 22:01:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 277 states have (on average 1.0794223826714802) internal successors, (299), 283 states have internal predecessors, (299), 56 states have call successors, (56), 29 states have call predecessors, (56), 34 states have return successors, (68), 55 states have call predecessors, (68), 55 states have call successors, (68) [2022-07-19 22:01:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 423 transitions. [2022-07-19 22:01:11,713 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 423 transitions. Word has length 133 [2022-07-19 22:01:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:11,713 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 423 transitions. [2022-07-19 22:01:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 57 states have (on average 3.543859649122807) internal successors, (202), 55 states have internal predecessors, (202), 19 states have call successors, (42), 9 states have call predecessors, (42), 13 states have return successors, (38), 15 states have call predecessors, (38), 18 states have call successors, (38) [2022-07-19 22:01:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 423 transitions. [2022-07-19 22:01:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 22:01:11,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:11,716 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:11,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:11,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-19 22:01:11,935 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -345180764, now seen corresponding path program 1 times [2022-07-19 22:01:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788231091] [2022-07-19 22:01:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:11,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:01:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:01:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:01:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:01:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:01:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 22:01:12,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:12,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788231091] [2022-07-19 22:01:12,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788231091] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:12,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012507250] [2022-07-19 22:01:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:12,576 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:12,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-19 22:01:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 92 conjunts are in the unsatisfiable core [2022-07-19 22:01:13,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:13,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:01:17,380 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:17,380 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:01:17,418 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:17,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-19 22:01:17,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 22:01:17,532 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:17,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:01:17,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,593 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 34 treesize of output 33 [2022-07-19 22:01:17,613 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 22:01:17,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 56 [2022-07-19 22:01:17,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-07-19 22:01:18,015 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 18 treesize of output 20 [2022-07-19 22:01:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 108 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 22:01:18,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:18,785 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2275 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be16_~#x#1.base| v_ArrVal_2275) |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.offset| 16)) 18446744073709551616) 0)) is different from false [2022-07-19 22:01:18,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012507250] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:18,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:01:18,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28] total 43 [2022-07-19 22:01:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223529575] [2022-07-19 22:01:18,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-19 22:01:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-19 22:01:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2190, Unknown=2, NotChecked=94, Total=2450 [2022-07-19 22:01:18,795 INFO L87 Difference]: Start difference. First operand 368 states and 423 transitions. Second operand has 43 states, 38 states have (on average 3.8947368421052633) internal successors, (148), 39 states have internal predecessors, (148), 15 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-19 22:01:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:23,721 INFO L93 Difference]: Finished difference Result 578 states and 675 transitions. [2022-07-19 22:01:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 22:01:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 38 states have (on average 3.8947368421052633) internal successors, (148), 39 states have internal predecessors, (148), 15 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) Word has length 133 [2022-07-19 22:01:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:23,723 INFO L225 Difference]: With dead ends: 578 [2022-07-19 22:01:23,724 INFO L226 Difference]: Without dead ends: 392 [2022-07-19 22:01:23,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 185 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=500, Invalid=5981, Unknown=3, NotChecked=158, Total=6642 [2022-07-19 22:01:23,726 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 277 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2979 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 739 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:23,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1405 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2979 Invalid, 0 Unknown, 739 Unchecked, 1.7s Time] [2022-07-19 22:01:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-19 22:01:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 367. [2022-07-19 22:01:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 277 states have (on average 1.0794223826714802) internal successors, (299), 283 states have internal predecessors, (299), 55 states have call successors, (55), 29 states have call predecessors, (55), 34 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2022-07-19 22:01:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 420 transitions. [2022-07-19 22:01:23,754 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 420 transitions. Word has length 133 [2022-07-19 22:01:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:23,754 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 420 transitions. [2022-07-19 22:01:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 38 states have (on average 3.8947368421052633) internal successors, (148), 39 states have internal predecessors, (148), 15 states have call successors, (29), 7 states have call predecessors, (29), 11 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-19 22:01:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 420 transitions. [2022-07-19 22:01:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 22:01:23,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:23,756 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:23,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:23,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-19 22:01:23,971 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1640610541, now seen corresponding path program 1 times [2022-07-19 22:01:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:23,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654476905] [2022-07-19 22:01:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:01:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:01:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:01:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:01:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-19 22:01:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654476905] [2022-07-19 22:01:24,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654476905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:01:24,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:01:24,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 22:01:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523569649] [2022-07-19 22:01:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:01:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:01:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:01:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:01:24,295 INFO L87 Difference]: Start difference. First operand 367 states and 420 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:01:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:24,965 INFO L93 Difference]: Finished difference Result 379 states and 433 transitions. [2022-07-19 22:01:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:01:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 134 [2022-07-19 22:01:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:24,967 INFO L225 Difference]: With dead ends: 379 [2022-07-19 22:01:24,967 INFO L226 Difference]: Without dead ends: 377 [2022-07-19 22:01:24,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:01:24,968 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 94 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:24,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 640 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:01:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-19 22:01:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 371. [2022-07-19 22:01:24,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 280 states have (on average 1.0785714285714285) internal successors, (302), 286 states have internal predecessors, (302), 55 states have call successors, (55), 30 states have call predecessors, (55), 35 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2022-07-19 22:01:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 423 transitions. [2022-07-19 22:01:24,994 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 423 transitions. Word has length 134 [2022-07-19 22:01:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:24,995 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 423 transitions. [2022-07-19 22:01:24,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:01:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 423 transitions. [2022-07-19 22:01:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 22:01:24,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:24,997 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 22:01:24,998 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:24,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1738674927, now seen corresponding path program 1 times [2022-07-19 22:01:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:24,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195394485] [2022-07-19 22:01:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:01:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:01:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:01:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:01:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-19 22:01:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195394485] [2022-07-19 22:01:26,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195394485] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:26,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415430379] [2022-07-19 22:01:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:26,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:26,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:26,421 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:26,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-19 22:01:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:26,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-19 22:01:26,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:27,023 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 [2022-07-19 22:01:29,341 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:29,341 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 [2022-07-19 22:01:29,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-19 22:01:29,393 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:29,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2022-07-19 22:01:29,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-19 22:01:29,407 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 [2022-07-19 22:01:31,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:31,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-19 22:01:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 64 proven. 62 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 22:01:40,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:41,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415430379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:41,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:01:41,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 36 [2022-07-19 22:01:41,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404085060] [2022-07-19 22:01:41,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:42,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 22:01:42,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 22:01:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1645, Unknown=2, NotChecked=0, Total=1806 [2022-07-19 22:01:42,001 INFO L87 Difference]: Start difference. First operand 371 states and 423 transitions. Second operand has 36 states, 32 states have (on average 4.46875) internal successors, (143), 34 states have internal predecessors, (143), 17 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2022-07-19 22:01:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:43,664 INFO L93 Difference]: Finished difference Result 564 states and 647 transitions. [2022-07-19 22:01:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 22:01:43,664 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 4.46875) internal successors, (143), 34 states have internal predecessors, (143), 17 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) Word has length 139 [2022-07-19 22:01:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:43,666 INFO L225 Difference]: With dead ends: 564 [2022-07-19 22:01:43,666 INFO L226 Difference]: Without dead ends: 379 [2022-07-19 22:01:43,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 200 SyntacticMatches, 12 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=449, Invalid=3971, Unknown=2, NotChecked=0, Total=4422 [2022-07-19 22:01:43,668 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 239 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 695 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:43,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 712 Invalid, 2451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1648 Invalid, 0 Unknown, 695 Unchecked, 1.0s Time] [2022-07-19 22:01:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-19 22:01:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 364. [2022-07-19 22:01:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 279 states have (on average 1.064516129032258) internal successors, (297), 286 states have internal predecessors, (297), 50 states have call successors, (50), 29 states have call predecessors, (50), 34 states have return successors, (56), 48 states have call predecessors, (56), 49 states have call successors, (56) [2022-07-19 22:01:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 403 transitions. [2022-07-19 22:01:43,696 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 403 transitions. Word has length 139 [2022-07-19 22:01:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:43,696 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 403 transitions. [2022-07-19 22:01:43,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 4.46875) internal successors, (143), 34 states have internal predecessors, (143), 17 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2022-07-19 22:01:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 403 transitions. [2022-07-19 22:01:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 22:01:43,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:43,698 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:43,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:43,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:43,911 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1519820209, now seen corresponding path program 1 times [2022-07-19 22:01:43,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:43,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251984892] [2022-07-19 22:01:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:01:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:01:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:01:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:01:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 46 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-19 22:01:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:45,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251984892] [2022-07-19 22:01:45,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251984892] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:45,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110760322] [2022-07-19 22:01:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:45,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:45,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:45,340 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:45,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-19 22:01:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:45,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-19 22:01:45,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:48,176 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:48,177 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 [2022-07-19 22:01:48,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-19 22:01:48,229 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:48,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2022-07-19 22:01:48,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-19 22:01:48,242 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 [2022-07-19 22:01:48,269 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 [2022-07-19 22:01:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 76 proven. 54 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-19 22:01:54,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-19 22:01:55,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110760322] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:01:55,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:01:55,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 9] total 43 [2022-07-19 22:01:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117159687] [2022-07-19 22:01:55,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:55,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-19 22:01:55,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:55,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-19 22:01:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1631, Unknown=1, NotChecked=0, Total=1806 [2022-07-19 22:01:55,203 INFO L87 Difference]: Start difference. First operand 364 states and 403 transitions. Second operand has 43 states, 41 states have (on average 4.146341463414634) internal successors, (170), 39 states have internal predecessors, (170), 16 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 14 states have call predecessors, (38), 14 states have call successors, (38) [2022-07-19 22:01:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:57,161 INFO L93 Difference]: Finished difference Result 451 states and 508 transitions. [2022-07-19 22:01:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 22:01:57,162 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 4.146341463414634) internal successors, (170), 39 states have internal predecessors, (170), 16 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 14 states have call predecessors, (38), 14 states have call successors, (38) Word has length 139 [2022-07-19 22:01:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:57,163 INFO L225 Difference]: With dead ends: 451 [2022-07-19 22:01:57,163 INFO L226 Difference]: Without dead ends: 362 [2022-07-19 22:01:57,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 286 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=403, Invalid=3256, Unknown=1, NotChecked=0, Total=3660 [2022-07-19 22:01:57,164 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 251 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:57,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 846 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2712 Invalid, 0 Unknown, 277 Unchecked, 1.5s Time] [2022-07-19 22:01:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-19 22:01:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 331. [2022-07-19 22:01:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 251 states have (on average 1.0637450199203187) internal successors, (267), 255 states have internal predecessors, (267), 48 states have call successors, (48), 28 states have call predecessors, (48), 31 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-19 22:01:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 368 transitions. [2022-07-19 22:01:57,188 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 368 transitions. Word has length 139 [2022-07-19 22:01:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:57,189 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 368 transitions. [2022-07-19 22:01:57,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 4.146341463414634) internal successors, (170), 39 states have internal predecessors, (170), 16 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 14 states have call predecessors, (38), 14 states have call successors, (38) [2022-07-19 22:01:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 368 transitions. [2022-07-19 22:01:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 22:01:57,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:57,191 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:57,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 22:01:57,407 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash 826318588, now seen corresponding path program 1 times [2022-07-19 22:01:57,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173225028] [2022-07-19 22:01:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:57,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:01:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:01:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:01:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:01:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-19 22:01:58,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:58,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173225028] [2022-07-19 22:01:58,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173225028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:01:58,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:01:58,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 22:01:58,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939823177] [2022-07-19 22:01:58,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:01:58,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 22:01:58,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:58,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 22:01:58,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:01:58,475 INFO L87 Difference]: Start difference. First operand 331 states and 368 transitions. Second operand has 23 states, 21 states have (on average 3.0) internal successors, (63), 18 states have internal predecessors, (63), 9 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 22:01:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:59,831 INFO L93 Difference]: Finished difference Result 359 states and 407 transitions. [2022-07-19 22:01:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 22:01:59,832 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.0) internal successors, (63), 18 states have internal predecessors, (63), 9 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) Word has length 141 [2022-07-19 22:01:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:59,833 INFO L225 Difference]: With dead ends: 359 [2022-07-19 22:01:59,833 INFO L226 Difference]: Without dead ends: 357 [2022-07-19 22:01:59,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 22:01:59,837 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 149 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:59,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 605 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 22:01:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-07-19 22:01:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 335. [2022-07-19 22:01:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 254 states have (on average 1.062992125984252) internal successors, (270), 258 states have internal predecessors, (270), 48 states have call successors, (48), 29 states have call predecessors, (48), 32 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-19 22:01:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 371 transitions. [2022-07-19 22:01:59,864 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 371 transitions. Word has length 141 [2022-07-19 22:01:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:59,864 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 371 transitions. [2022-07-19 22:01:59,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.0) internal successors, (63), 18 states have internal predecessors, (63), 9 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 22:01:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 371 transitions. [2022-07-19 22:01:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 22:01:59,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:59,866 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:59,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 22:01:59,866 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash -623700775, now seen corresponding path program 1 times [2022-07-19 22:01:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988225897] [2022-07-19 22:01:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:02:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 22:02:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:02:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:02:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-19 22:02:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:00,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988225897] [2022-07-19 22:02:00,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988225897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:00,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:00,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:02:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218772022] [2022-07-19 22:02:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:00,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:02:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:02:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:02:00,182 INFO L87 Difference]: Start difference. First operand 335 states and 371 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 22:02:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:00,740 INFO L93 Difference]: Finished difference Result 352 states and 391 transitions. [2022-07-19 22:02:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:02:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 146 [2022-07-19 22:02:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:00,742 INFO L225 Difference]: With dead ends: 352 [2022-07-19 22:02:00,742 INFO L226 Difference]: Without dead ends: 350 [2022-07-19 22:02:00,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:02:00,743 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 184 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:00,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 284 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:02:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-19 22:02:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 339. [2022-07-19 22:02:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 257 states have (on average 1.0622568093385214) internal successors, (273), 261 states have internal predecessors, (273), 48 states have call successors, (48), 30 states have call predecessors, (48), 33 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-19 22:02:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 374 transitions. [2022-07-19 22:02:00,765 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 374 transitions. Word has length 146 [2022-07-19 22:02:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:00,765 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 374 transitions. [2022-07-19 22:02:00,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 22:02:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 374 transitions. [2022-07-19 22:02:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 22:02:00,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:00,767 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 22:02:00,768 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1881452801, now seen corresponding path program 1 times [2022-07-19 22:02:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:00,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906363875] [2022-07-19 22:02:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:02:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 22:02:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:02:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:02:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:02:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-19 22:02:01,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:01,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906363875] [2022-07-19 22:02:01,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906363875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:01,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:01,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 22:02:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245352103] [2022-07-19 22:02:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 22:02:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 22:02:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:02:01,674 INFO L87 Difference]: Start difference. First operand 339 states and 374 transitions. Second operand has 20 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-19 22:02:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:03,066 INFO L93 Difference]: Finished difference Result 375 states and 422 transitions. [2022-07-19 22:02:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:02:03,067 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) Word has length 152 [2022-07-19 22:02:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:03,068 INFO L225 Difference]: With dead ends: 375 [2022-07-19 22:02:03,068 INFO L226 Difference]: Without dead ends: 373 [2022-07-19 22:02:03,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-07-19 22:02:03,069 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 319 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:03,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 342 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 22:02:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-19 22:02:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 350. [2022-07-19 22:02:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 265 states have (on average 1.0641509433962264) internal successors, (282), 269 states have internal predecessors, (282), 50 states have call successors, (50), 31 states have call predecessors, (50), 34 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-19 22:02:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 387 transitions. [2022-07-19 22:02:03,103 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 387 transitions. Word has length 152 [2022-07-19 22:02:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 387 transitions. [2022-07-19 22:02:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-19 22:02:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 387 transitions. [2022-07-19 22:02:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 22:02:03,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:03,105 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:03,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 22:02:03,106 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1223464279, now seen corresponding path program 1 times [2022-07-19 22:02:03,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:03,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953617543] [2022-07-19 22:02:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:02:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:02:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:02:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:02:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:02:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 22:02:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:02:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-19 22:02:03,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:03,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953617543] [2022-07-19 22:02:03,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953617543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:03,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:03,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:02:03,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451681060] [2022-07-19 22:02:03,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:03,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:02:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:02:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:02:03,366 INFO L87 Difference]: Start difference. First operand 350 states and 387 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:02:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:03,932 INFO L93 Difference]: Finished difference Result 373 states and 415 transitions. [2022-07-19 22:02:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:02:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2022-07-19 22:02:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:03,934 INFO L225 Difference]: With dead ends: 373 [2022-07-19 22:02:03,934 INFO L226 Difference]: Without dead ends: 371 [2022-07-19 22:02:03,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:02:03,934 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 148 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:03,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 508 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:02:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-07-19 22:02:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 360. [2022-07-19 22:02:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 271 states have (on average 1.062730627306273) internal successors, (288), 276 states have internal predecessors, (288), 52 states have call successors, (52), 32 states have call predecessors, (52), 36 states have return successors, (60), 51 states have call predecessors, (60), 51 states have call successors, (60) [2022-07-19 22:02:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 400 transitions. [2022-07-19 22:02:03,961 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 400 transitions. Word has length 156 [2022-07-19 22:02:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:03,962 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 400 transitions. [2022-07-19 22:02:03,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:02:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 400 transitions. [2022-07-19 22:02:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-19 22:02:03,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:03,964 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:03,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 22:02:03,964 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1711512995, now seen corresponding path program 1 times [2022-07-19 22:02:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:03,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355788500] [2022-07-19 22:02:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:02:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 22:02:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:02:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:02:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:02:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 22:02:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-19 22:02:05,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:05,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355788500] [2022-07-19 22:02:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355788500] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053720785] [2022-07-19 22:02:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:05,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:05,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:02:05,240 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:02:05,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-19 22:02:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:06,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 110 conjunts are in the unsatisfiable core [2022-07-19 22:02:06,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:02:06,358 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 [2022-07-19 22:02:06,520 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 22:02:06,521 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 19 treesize of output 18 [2022-07-19 22:02:06,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:06,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:06,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:02:06,569 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 22:02:06,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2022-07-19 22:02:06,581 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:02:06,581 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 [2022-07-19 22:02:06,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:06,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:02:06,669 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 22:02:06,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2022-07-19 22:02:06,894 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-19 22:02:06,894 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 26 treesize of output 10 [2022-07-19 22:02:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-19 22:02:07,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:02:23,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053720785] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:23,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:02:23,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 39 [2022-07-19 22:02:23,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979622964] [2022-07-19 22:02:23,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:02:23,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-19 22:02:23,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-19 22:02:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1823, Unknown=4, NotChecked=0, Total=1980 [2022-07-19 22:02:23,708 INFO L87 Difference]: Start difference. First operand 360 states and 400 transitions. Second operand has 39 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 18 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31) [2022-07-19 22:02:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:26,426 INFO L93 Difference]: Finished difference Result 394 states and 449 transitions. [2022-07-19 22:02:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:02:26,427 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 18 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31) Word has length 158 [2022-07-19 22:02:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:26,429 INFO L225 Difference]: With dead ends: 394 [2022-07-19 22:02:26,429 INFO L226 Difference]: Without dead ends: 392 [2022-07-19 22:02:26,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 188 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=441, Invalid=4247, Unknown=4, NotChecked=0, Total=4692 [2022-07-19 22:02:26,430 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 447 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 4271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:26,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 692 Invalid, 4271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 22:02:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-19 22:02:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 366. [2022-07-19 22:02:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 275 states have (on average 1.0618181818181818) internal successors, (292), 280 states have internal predecessors, (292), 53 states have call successors, (53), 33 states have call predecessors, (53), 37 states have return successors, (61), 52 states have call predecessors, (61), 52 states have call successors, (61) [2022-07-19 22:02:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 406 transitions. [2022-07-19 22:02:26,464 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 406 transitions. Word has length 158 [2022-07-19 22:02:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:26,464 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 406 transitions. [2022-07-19 22:02:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 18 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31) [2022-07-19 22:02:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 406 transitions. [2022-07-19 22:02:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 22:02:26,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:26,466 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:26,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-19 22:02:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-19 22:02:26,685 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:26,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:26,686 INFO L85 PathProgramCache]: Analyzing trace with hash -880846636, now seen corresponding path program 1 times [2022-07-19 22:02:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:26,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132526294] [2022-07-19 22:02:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:02:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:02:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:02:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:02:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:02:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:27,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:02:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 22:02:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:02:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 22:02:27,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:27,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132526294] [2022-07-19 22:02:27,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132526294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:27,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:27,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 22:02:27,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012218145] [2022-07-19 22:02:27,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:27,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:02:27,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:27,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:02:27,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:02:27,062 INFO L87 Difference]: Start difference. First operand 366 states and 406 transitions. Second operand has 11 states, 10 states have (on average 6.0) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 22:02:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:27,695 INFO L93 Difference]: Finished difference Result 468 states and 534 transitions. [2022-07-19 22:02:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:02:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.0) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 167 [2022-07-19 22:02:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:27,697 INFO L225 Difference]: With dead ends: 468 [2022-07-19 22:02:27,697 INFO L226 Difference]: Without dead ends: 368 [2022-07-19 22:02:27,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:02:27,698 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 157 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:27,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 564 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:02:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-07-19 22:02:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2022-07-19 22:02:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 276 states have (on average 1.0615942028985508) internal successors, (293), 281 states have internal predecessors, (293), 53 states have call successors, (53), 33 states have call predecessors, (53), 37 states have return successors, (61), 52 states have call predecessors, (61), 52 states have call successors, (61) [2022-07-19 22:02:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 407 transitions. [2022-07-19 22:02:27,731 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 407 transitions. Word has length 167 [2022-07-19 22:02:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:27,731 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 407 transitions. [2022-07-19 22:02:27,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.0) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 22:02:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 407 transitions. [2022-07-19 22:02:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 22:02:27,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:27,733 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 22:02:27,734 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1602985816, now seen corresponding path program 1 times [2022-07-19 22:02:27,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:27,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052191136] [2022-07-19 22:02:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:02:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:02:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:02:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 22:02:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:02:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:02:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 22:02:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-19 22:02:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052191136] [2022-07-19 22:02:28,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052191136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:28,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:28,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 22:02:28,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318508223] [2022-07-19 22:02:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:28,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 22:02:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 22:02:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:02:28,785 INFO L87 Difference]: Start difference. First operand 367 states and 407 transitions. Second operand has 21 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-19 22:02:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:29,876 INFO L93 Difference]: Finished difference Result 391 states and 443 transitions. [2022-07-19 22:02:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:02:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 159 [2022-07-19 22:02:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:29,878 INFO L225 Difference]: With dead ends: 391 [2022-07-19 22:02:29,878 INFO L226 Difference]: Without dead ends: 389 [2022-07-19 22:02:29,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2022-07-19 22:02:29,879 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 264 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:29,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 299 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 22:02:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-07-19 22:02:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 375. [2022-07-19 22:02:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 281 states have (on average 1.0640569395017794) internal successors, (299), 287 states have internal predecessors, (299), 55 states have call successors, (55), 34 states have call predecessors, (55), 38 states have return successors, (63), 53 states have call predecessors, (63), 54 states have call successors, (63) [2022-07-19 22:02:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 417 transitions. [2022-07-19 22:02:29,914 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 417 transitions. Word has length 159 [2022-07-19 22:02:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:29,915 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 417 transitions. [2022-07-19 22:02:29,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 10 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-19 22:02:29,915 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 417 transitions. [2022-07-19 22:02:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 22:02:29,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:29,917 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 22:02:29,917 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1309589061, now seen corresponding path program 1 times [2022-07-19 22:02:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:29,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916746022] [2022-07-19 22:02:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:02:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 22:02:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:02:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:02:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 22:02:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-19 22:02:30,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:30,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916746022] [2022-07-19 22:02:30,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916746022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:30,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:30,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:02:30,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983130208] [2022-07-19 22:02:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:30,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:02:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:02:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:02:30,189 INFO L87 Difference]: Start difference. First operand 375 states and 417 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-19 22:02:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:30,656 INFO L93 Difference]: Finished difference Result 422 states and 471 transitions. [2022-07-19 22:02:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:02:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 159 [2022-07-19 22:02:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:30,658 INFO L225 Difference]: With dead ends: 422 [2022-07-19 22:02:30,658 INFO L226 Difference]: Without dead ends: 377 [2022-07-19 22:02:30,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:02:30,658 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 210 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:30,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 234 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:02:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-19 22:02:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2022-07-19 22:02:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 281 states have (on average 1.0533807829181494) internal successors, (296), 287 states have internal predecessors, (296), 55 states have call successors, (55), 34 states have call predecessors, (55), 38 states have return successors, (63), 53 states have call predecessors, (63), 54 states have call successors, (63) [2022-07-19 22:02:30,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 414 transitions. [2022-07-19 22:02:30,689 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 414 transitions. Word has length 159 [2022-07-19 22:02:30,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:30,689 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 414 transitions. [2022-07-19 22:02:30,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-19 22:02:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 414 transitions. [2022-07-19 22:02:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 22:02:30,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:30,691 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 22:02:30,692 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1189755825, now seen corresponding path program 1 times [2022-07-19 22:02:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:30,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970334257] [2022-07-19 22:02:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:02:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:02:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:02:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:02:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:02:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 22:02:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:02:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-19 22:02:31,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:31,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970334257] [2022-07-19 22:02:31,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970334257] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:31,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191815706] [2022-07-19 22:02:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:31,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:31,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:02:31,111 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:02:31,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-19 22:02:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:31,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 110 conjunts are in the unsatisfiable core [2022-07-19 22:02:31,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:02:31,720 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 [2022-07-19 22:02:31,883 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:02:31,883 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 [2022-07-19 22:02:31,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:02:33,936 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be16_harness_~#buf~3#1.base_BEFORE_CALL_70| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_write_be16_harness_~#buf~3#1.base_BEFORE_CALL_70| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be16_harness_~#buf~3#1.base_BEFORE_CALL_70|) 8)))) is different from true [2022-07-19 22:02:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:55,047 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 22 treesize of output 21 [2022-07-19 22:02:55,060 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:02:55,061 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 [2022-07-19 22:02:55,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-19 22:02:57,111 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base_BEFORE_CALL_35| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base_BEFORE_CALL_35| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base_BEFORE_CALL_35|) 8)))) is different from true [2022-07-19 22:02:59,198 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base_BEFORE_CALL_36| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base_BEFORE_CALL_36| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be16_~buf#1.base_BEFORE_CALL_36|) 8)))) is different from true [2022-07-19 22:02:59,271 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:02:59,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2022-07-19 22:02:59,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:59,276 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 22 treesize of output 21 [2022-07-19 22:03:03,363 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_77 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_77) 8) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_77))) is different from true