./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_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_cursor_read_be32_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 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:05:55,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:05:55,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:05:55,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:05:55,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:05:55,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:05:55,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:05:55,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:05:55,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:05:55,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:05:55,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:05:55,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:05:55,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:05:55,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:05:55,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:05:55,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:05:55,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:05:55,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:05:55,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:05:55,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:05:55,602 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:05:55,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:05:55,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:05:55,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:05:55,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:05:55,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:05:55,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:05:55,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:05:55,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:05:55,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:05:55,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:05:55,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:05:55,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:05:55,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:05:55,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:05:55,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:05:55,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:05:55,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:05:55,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:05:55,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:05:55,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:05:55,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:05:55,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:05:55,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:05:55,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:05:55,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:05:55,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:05:55,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:05:55,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:05:55,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:05:55,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:05:55,648 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:05:55,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:05:55,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:05:55,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:05:55,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:05:55,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:05:55,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:05:55,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:05:55,650 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:05:55,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:05:55,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:05:55,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:05:55,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:05:55,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:05:55,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:05:55,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:05:55,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:05:55,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:05:55,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:05:55,653 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:05:55,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:05:55,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:05:55,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a [2022-07-19 22:05:55,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:05:55,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:05:55,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:05:55,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:05:55,841 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:05:55,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2022-07-19 22:05:55,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e21c72a2/c8137841ea0c41b3a5b701c8c41b5105/FLAGc04ecd1d1 [2022-07-19 22:05:56,413 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:05:56,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2022-07-19 22:05:56,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e21c72a2/c8137841ea0c41b3a5b701c8c41b5105/FLAGc04ecd1d1 [2022-07-19 22:05:56,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e21c72a2/c8137841ea0c41b3a5b701c8c41b5105 [2022-07-19 22:05:56,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:05:56,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:05:56,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:05:56,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:05:56,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:05:56,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:05:56" (1/1) ... [2022-07-19 22:05:56,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466f17d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:56, skipping insertion in model container [2022-07-19 22:05:56,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:05:56" (1/1) ... [2022-07-19 22:05:56,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:05:56,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:05:56,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4499,4512] [2022-07-19 22:05:56,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4559,4572] [2022-07-19 22:05:57,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,569 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,569 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,570 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,571 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,578 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,578 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,579 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,580 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:57,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:05:57,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:05:57,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:05:57,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:05:57,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:05:57,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:05:57,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:05:57,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:05:57,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:05:57,787 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:05:57,869 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:05:57,998 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,011 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:05:58,121 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:05:58,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4499,4512] [2022-07-19 22:05:58,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i[4559,4572] [2022-07-19 22:05:58,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,179 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,180 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,180 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,192 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,201 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,202 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:05:58,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:05:58,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:05:58,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:05:58,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:05:58,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:05:58,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:05:58,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:05:58,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:05:58,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:05:58,257 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:05:58,333 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,334 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:05:58,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:05:58,499 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:05:58,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58 WrapperNode [2022-07-19 22:05:58,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:05:58,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:05:58,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:05:58,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:05:58,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,625 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 62, calls inlined = 11, statements flattened = 986 [2022-07-19 22:05:58,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:05:58,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:05:58,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:05:58,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:05:58,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:05:58,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:05:58,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:05:58,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:05:58,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (1/1) ... [2022-07-19 22:05:58,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:05:58,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:05:58,776 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 22:05:58,781 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 22:05:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-07-19 22:05:58,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-07-19 22:05:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-19 22:05:58,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-19 22:05:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure ntohl [2022-07-19 22:05:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:05:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 22:05:58,808 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 22:05:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-19 22:05:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 22:05:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 22:05:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:05:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 22:05:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 22:05:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:05:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:05:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:05:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:05:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:05:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh32 [2022-07-19 22:05:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh32 [2022-07-19 22:05:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:05:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:05:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 22:05:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 22:05:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 22:05:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 22:05:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 22:05:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 22:05:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-19 22:05:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:05:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:05:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:05:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-19 22:05:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:05:59,045 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:05:59,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:05:59,880 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:05:59,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:05:59,889 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 22:05:59,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:05:59 BoogieIcfgContainer [2022-07-19 22:05:59,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:05:59,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:05:59,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:05:59,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:05:59,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:05:56" (1/3) ... [2022-07-19 22:05:59,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566d997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:05:59, skipping insertion in model container [2022-07-19 22:05:59,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:05:58" (2/3) ... [2022-07-19 22:05:59,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566d997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:05:59, skipping insertion in model container [2022-07-19 22:05:59,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:05:59" (3/3) ... [2022-07-19 22:05:59,898 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be32_harness.i [2022-07-19 22:05:59,911 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:05:59,911 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:05:59,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:05:59,954 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@75e0422e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d706969 [2022-07-19 22:05:59,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:05:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 103 states have internal predecessors, (128), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-19 22:05:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:05:59,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:05:59,967 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:05:59,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:05:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:05:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash -89191240, now seen corresponding path program 1 times [2022-07-19 22:05:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:05:59,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482607040] [2022-07-19 22:05:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:59,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:06:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:06:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:06:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:06:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:06:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:06:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:06:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:06:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:06:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:06:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-19 22:06:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:00,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482607040] [2022-07-19 22:06:00,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482607040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:00,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:00,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:06:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156945935] [2022-07-19 22:06:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:06:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:06:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:06:00,703 INFO L87 Difference]: Start difference. First operand has 163 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 103 states have internal predecessors, (128), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 22:06:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:01,246 INFO L93 Difference]: Finished difference Result 326 states and 478 transitions. [2022-07-19 22:06:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:06:01,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2022-07-19 22:06:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:01,255 INFO L225 Difference]: With dead ends: 326 [2022-07-19 22:06:01,255 INFO L226 Difference]: Without dead ends: 164 [2022-07-19 22:06:01,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:06:01,261 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 117 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:01,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 290 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:06:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-19 22:06:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2022-07-19 22:06:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 98 states have internal predecessors, (120), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-19 22:06:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2022-07-19 22:06:01,317 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 124 [2022-07-19 22:06:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:01,317 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2022-07-19 22:06:01,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 22:06:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2022-07-19 22:06:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:06:01,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:01,324 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:01,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:06:01,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -296495566, now seen corresponding path program 1 times [2022-07-19 22:06:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:01,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438220319] [2022-07-19 22:06:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:06:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:06:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:06:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:06:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:06:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:06:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:06:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:06:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:06:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:06:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-19 22:06:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:01,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438220319] [2022-07-19 22:06:01,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438220319] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:01,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626187878] [2022-07-19 22:06:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:01,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:01,638 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 22:06:01,639 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 22:06:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:06:02,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-19 22:06:02,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:02,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626187878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:02,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:02,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-19 22:06:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083945625] [2022-07-19 22:06:02,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:02,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:06:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:06:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:06:02,154 INFO L87 Difference]: Start difference. First operand 157 states and 215 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 22:06:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:02,308 INFO L93 Difference]: Finished difference Result 290 states and 409 transitions. [2022-07-19 22:06:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:06:02,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 124 [2022-07-19 22:06:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:02,310 INFO L225 Difference]: With dead ends: 290 [2022-07-19 22:06:02,310 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 22:06:02,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:06:02,312 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 238 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:02,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 450 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:06:02,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 22:06:02,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 22:06:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-07-19 22:06:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 225 transitions. [2022-07-19 22:06:02,324 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 225 transitions. Word has length 124 [2022-07-19 22:06:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:02,325 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 225 transitions. [2022-07-19 22:06:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 22:06:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 225 transitions. [2022-07-19 22:06:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 22:06:02,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:02,326 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:02,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 22:06:02,540 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 22:06:02,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash -961099817, now seen corresponding path program 1 times [2022-07-19 22:06:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:02,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596612318] [2022-07-19 22:06:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:02,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:06:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:06:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:06:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:06:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:06:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:06:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:06:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:06:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 22:06:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-19 22:06:02,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:02,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596612318] [2022-07-19 22:06:02,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596612318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:02,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440121487] [2022-07-19 22:06:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:02,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:02,937 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 22:06:02,960 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 22:06:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:03,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:06:03,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 22:06:03,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:03,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440121487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:03,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:03,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-19 22:06:03,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940288617] [2022-07-19 22:06:03,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:03,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:06:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:03,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:06:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:06:03,495 INFO L87 Difference]: Start difference. First operand 160 states and 225 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-19 22:06:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:03,686 INFO L93 Difference]: Finished difference Result 276 states and 390 transitions. [2022-07-19 22:06:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:06:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2022-07-19 22:06:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:03,688 INFO L225 Difference]: With dead ends: 276 [2022-07-19 22:06:03,688 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 22:06:03,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:06:03,689 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 256 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:03,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 587 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:06:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 22:06:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 22:06:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-19 22:06:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 223 transitions. [2022-07-19 22:06:03,701 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 223 transitions. Word has length 126 [2022-07-19 22:06:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:03,702 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 223 transitions. [2022-07-19 22:06:03,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-19 22:06:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 223 transitions. [2022-07-19 22:06:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 22:06:03,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:03,704 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:03,727 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 22:06:03,924 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 22:06:03,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1396549486, now seen corresponding path program 2 times [2022-07-19 22:06:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:03,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173696162] [2022-07-19 22:06:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:06:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:06:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:06:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:06:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:06:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:06:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:06:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-19 22:06:04,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:04,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173696162] [2022-07-19 22:06:04,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173696162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:04,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433042763] [2022-07-19 22:06:04,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:06:04,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:04,255 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 22:06:04,256 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 22:06:04,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:06:04,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:06:04,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 22:06:04,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 22:06:04,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:04,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433042763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:04,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:04,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2022-07-19 22:06:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076872600] [2022-07-19 22:06:04,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:04,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:06:04,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:04,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:06:04,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:06:04,930 INFO L87 Difference]: Start difference. First operand 160 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 22:06:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:05,066 INFO L93 Difference]: Finished difference Result 270 states and 377 transitions. [2022-07-19 22:06:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:06:05,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 128 [2022-07-19 22:06:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:05,068 INFO L225 Difference]: With dead ends: 270 [2022-07-19 22:06:05,068 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 22:06:05,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:06:05,070 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 121 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:05,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1149 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:06:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 22:06:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 22:06:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-19 22:06:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2022-07-19 22:06:05,080 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 128 [2022-07-19 22:06:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:05,080 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2022-07-19 22:06:05,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 22:06:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2022-07-19 22:06:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 22:06:05,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:05,082 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:05,102 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 22:06:05,302 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 22:06:05,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:05,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 898615479, now seen corresponding path program 3 times [2022-07-19 22:06:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:05,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058483124] [2022-07-19 22:06:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:05,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:06:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:06:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:06:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:06:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:06:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-19 22:06:05,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:05,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058483124] [2022-07-19 22:06:05,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058483124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:05,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913208425] [2022-07-19 22:06:05,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:06:05,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:05,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:05,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:06:05,707 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 22:06:06,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 22:06:06,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:06:06,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 22:06:06,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 22:06:06,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:06,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913208425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:06,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:06,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-19 22:06:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260834487] [2022-07-19 22:06:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:06,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:06:06,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:06:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:06:06,191 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 22:06:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:06,280 INFO L93 Difference]: Finished difference Result 265 states and 363 transitions. [2022-07-19 22:06:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:06:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 130 [2022-07-19 22:06:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:06,282 INFO L225 Difference]: With dead ends: 265 [2022-07-19 22:06:06,282 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 22:06:06,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:06:06,283 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:06,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1166 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:06:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 22:06:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 22:06:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-07-19 22:06:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 219 transitions. [2022-07-19 22:06:06,292 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 219 transitions. Word has length 130 [2022-07-19 22:06:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:06,292 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 219 transitions. [2022-07-19 22:06:06,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 22:06:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 219 transitions. [2022-07-19 22:06:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 22:06:06,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:06,294 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:06,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 22:06:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:06,514 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash -657945444, now seen corresponding path program 4 times [2022-07-19 22:06:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:06,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753717523] [2022-07-19 22:06:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:06,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:06:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:06:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:06:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:06:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-19 22:06:06,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:06,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753717523] [2022-07-19 22:06:06,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753717523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:06,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:06,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 22:06:06,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959116808] [2022-07-19 22:06:06,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:06,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:06:06,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:06:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:06:06,786 INFO L87 Difference]: Start difference. First operand 160 states and 219 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 22:06:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:07,788 INFO L93 Difference]: Finished difference Result 261 states and 353 transitions. [2022-07-19 22:06:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 22:06:07,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-07-19 22:06:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:07,791 INFO L225 Difference]: With dead ends: 261 [2022-07-19 22:06:07,791 INFO L226 Difference]: Without dead ends: 167 [2022-07-19 22:06:07,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:06:07,792 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 255 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:07,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 662 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 22:06:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-19 22:06:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2022-07-19 22:06:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-07-19 22:06:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 218 transitions. [2022-07-19 22:06:07,799 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 218 transitions. Word has length 132 [2022-07-19 22:06:07,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:07,800 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 218 transitions. [2022-07-19 22:06:07,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 22:06:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 218 transitions. [2022-07-19 22:06:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 22:06:07,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:07,801 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:07,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 22:06:07,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash -590506687, now seen corresponding path program 1 times [2022-07-19 22:06:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:07,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342541923] [2022-07-19 22:06:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:06:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:06:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:06:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:06:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-19 22:06:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342541923] [2022-07-19 22:06:08,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342541923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:08,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:08,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:06:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6260362] [2022-07-19 22:06:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:08,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:06:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:06:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:06:08,053 INFO L87 Difference]: Start difference. First operand 160 states and 218 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 22:06:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:09,121 INFO L93 Difference]: Finished difference Result 179 states and 249 transitions. [2022-07-19 22:06:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:06:09,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 134 [2022-07-19 22:06:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:09,123 INFO L225 Difference]: With dead ends: 179 [2022-07-19 22:06:09,123 INFO L226 Difference]: Without dead ends: 177 [2022-07-19 22:06:09,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:06:09,124 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 139 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:09,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 903 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 22:06:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-19 22:06:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2022-07-19 22:06:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2022-07-19 22:06:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 236 transitions. [2022-07-19 22:06:09,152 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 236 transitions. Word has length 134 [2022-07-19 22:06:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 236 transitions. [2022-07-19 22:06:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 22:06:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 236 transitions. [2022-07-19 22:06:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 22:06:09,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:09,154 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 22:06:09,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1856338057, now seen corresponding path program 1 times [2022-07-19 22:06:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:09,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074722699] [2022-07-19 22:06:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:06:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:06:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:06:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:06:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-19 22:06:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:09,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074722699] [2022-07-19 22:06:09,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074722699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:09,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:09,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:06:09,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212506423] [2022-07-19 22:06:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:09,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:06:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:09,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:06:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:06:09,404 INFO L87 Difference]: Start difference. First operand 169 states and 236 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 22:06:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:10,022 INFO L93 Difference]: Finished difference Result 308 states and 433 transitions. [2022-07-19 22:06:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:06:10,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 138 [2022-07-19 22:06:10,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:10,024 INFO L225 Difference]: With dead ends: 308 [2022-07-19 22:06:10,024 INFO L226 Difference]: Without dead ends: 179 [2022-07-19 22:06:10,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:06:10,025 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 124 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:10,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 486 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:06:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-19 22:06:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2022-07-19 22:06:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 112 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 15 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-19 22:06:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 242 transitions. [2022-07-19 22:06:10,033 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 242 transitions. Word has length 138 [2022-07-19 22:06:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:10,034 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 242 transitions. [2022-07-19 22:06:10,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 22:06:10,034 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 242 transitions. [2022-07-19 22:06:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 22:06:10,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:10,035 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:10,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 22:06:10,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1607088108, now seen corresponding path program 1 times [2022-07-19 22:06:10,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:10,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324175675] [2022-07-19 22:06:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:10,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:06:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 22:06:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:06:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:06:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:06:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:06:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:06:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:06:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 22:06:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:06:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-19 22:06:10,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:10,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324175675] [2022-07-19 22:06:10,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324175675] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121660635] [2022-07-19 22:06:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:10,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:10,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:10,429 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 22:06:10,430 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 22:06:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:10,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:06:10,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 22:06:10,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-19 22:06:10,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121660635] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:10,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:06:10,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 5] total 17 [2022-07-19 22:06:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117053029] [2022-07-19 22:06:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:06:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:06:10,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:06:10,990 INFO L87 Difference]: Start difference. First operand 173 states and 242 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 22:06:11,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:11,084 INFO L93 Difference]: Finished difference Result 313 states and 444 transitions. [2022-07-19 22:06:11,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:06:11,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 139 [2022-07-19 22:06:11,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:11,086 INFO L225 Difference]: With dead ends: 313 [2022-07-19 22:06:11,086 INFO L226 Difference]: Without dead ends: 179 [2022-07-19 22:06:11,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:06:11,087 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 5 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:11,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 420 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:06:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-19 22:06:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2022-07-19 22:06:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 114 states have internal predecessors, (136), 49 states have call successors, (49), 13 states have call predecessors, (49), 15 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-19 22:06:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 245 transitions. [2022-07-19 22:06:11,096 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 245 transitions. Word has length 139 [2022-07-19 22:06:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:11,097 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 245 transitions. [2022-07-19 22:06:11,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 22:06:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 245 transitions. [2022-07-19 22:06:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 22:06:11,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:11,098 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:11,131 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 22:06:11,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:11,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:11,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1054111573, now seen corresponding path program 1 times [2022-07-19 22:06:11,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:11,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272756830] [2022-07-19 22:06:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:11,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:06:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:06:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:06:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:06:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:06:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:06:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:06:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:06:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:06:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:06:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:06:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:06:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 22:06:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:06:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-19 22:06:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:11,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272756830] [2022-07-19 22:06:11,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272756830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:11,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323041394] [2022-07-19 22:06:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:11,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:11,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:11,685 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 22:06:11,728 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 22:06:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:12,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-19 22:06:12,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:12,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-19 22:06:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-19 22:06:12,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:12,837 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:06:12,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-07-19 22:06:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-19 22:06:12,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323041394] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:06:12,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:06:12,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 29 [2022-07-19 22:06:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961057112] [2022-07-19 22:06:12,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 22:06:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 22:06:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2022-07-19 22:06:12,853 INFO L87 Difference]: Start difference. First operand 176 states and 245 transitions. Second operand has 29 states, 26 states have (on average 4.653846153846154) internal successors, (121), 21 states have internal predecessors, (121), 11 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2022-07-19 22:06:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:15,741 INFO L93 Difference]: Finished difference Result 352 states and 493 transitions. [2022-07-19 22:06:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 22:06:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.653846153846154) internal successors, (121), 21 states have internal predecessors, (121), 11 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) Word has length 140 [2022-07-19 22:06:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:15,743 INFO L225 Difference]: With dead ends: 352 [2022-07-19 22:06:15,743 INFO L226 Difference]: Without dead ends: 180 [2022-07-19 22:06:15,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 303 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 22:06:15,745 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 197 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:15,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1963 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2770 Invalid, 0 Unknown, 223 Unchecked, 2.4s Time] [2022-07-19 22:06:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-19 22:06:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2022-07-19 22:06:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 114 states have internal predecessors, (135), 49 states have call successors, (49), 13 states have call predecessors, (49), 15 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2022-07-19 22:06:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 243 transitions. [2022-07-19 22:06:15,754 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 243 transitions. Word has length 140 [2022-07-19 22:06:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:15,754 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 243 transitions. [2022-07-19 22:06:15,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.653846153846154) internal successors, (121), 21 states have internal predecessors, (121), 11 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2022-07-19 22:06:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 243 transitions. [2022-07-19 22:06:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 22:06:15,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:15,756 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:15,777 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 22:06:15,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:15,974 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash 325366486, now seen corresponding path program 1 times [2022-07-19 22:06:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:15,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419731093] [2022-07-19 22:06:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:15,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:06:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:06:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 22:06:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:06:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:06:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:06:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:06:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 22:06:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:06:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:06:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:06:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 22:06:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:06:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-19 22:06:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:16,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419731093] [2022-07-19 22:06:16,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419731093] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:16,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694655277] [2022-07-19 22:06:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:16,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:16,392 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 22:06:16,460 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 22:06:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:16,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:06:16,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-19 22:06:17,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:17,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694655277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:17,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:17,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-07-19 22:06:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719011898] [2022-07-19 22:06:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:17,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:06:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:06:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:06:17,023 INFO L87 Difference]: Start difference. First operand 176 states and 243 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-19 22:06:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:17,188 INFO L93 Difference]: Finished difference Result 330 states and 468 transitions. [2022-07-19 22:06:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:06:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 155 [2022-07-19 22:06:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:17,189 INFO L225 Difference]: With dead ends: 330 [2022-07-19 22:06:17,189 INFO L226 Difference]: Without dead ends: 181 [2022-07-19 22:06:17,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:06:17,190 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:17,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1591 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:06:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-19 22:06:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-19 22:06:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 115 states have (on average 1.208695652173913) internal successors, (139), 119 states have internal predecessors, (139), 49 states have call successors, (49), 13 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-19 22:06:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 256 transitions. [2022-07-19 22:06:17,203 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 256 transitions. Word has length 155 [2022-07-19 22:06:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:17,203 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 256 transitions. [2022-07-19 22:06:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-19 22:06:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 256 transitions. [2022-07-19 22:06:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 22:06:17,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:17,206 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:17,229 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 22:06:17,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:17,427 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1171187365, now seen corresponding path program 1 times [2022-07-19 22:06:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:17,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104698337] [2022-07-19 22:06:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:17,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:06:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:06:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:06:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:06:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:06:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:06:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:06:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:06:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:06:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:06:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:06:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 22:06:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:06:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-19 22:06:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104698337] [2022-07-19 22:06:17,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104698337] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130942520] [2022-07-19 22:06:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:17,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:17,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:17,773 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 22:06:17,774 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 22:06:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:18,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 22:06:18,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-19 22:06:18,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:18,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130942520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:18,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:18,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-19 22:06:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888777381] [2022-07-19 22:06:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:06:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:06:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:06:18,348 INFO L87 Difference]: Start difference. First operand 181 states and 256 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:06:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:18,622 INFO L93 Difference]: Finished difference Result 335 states and 491 transitions. [2022-07-19 22:06:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:06:18,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 157 [2022-07-19 22:06:18,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:18,624 INFO L225 Difference]: With dead ends: 335 [2022-07-19 22:06:18,624 INFO L226 Difference]: Without dead ends: 181 [2022-07-19 22:06:18,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:06:18,625 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 17 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:18,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 743 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-07-19 22:06:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-19 22:06:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-19 22:06:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 115 states have (on average 1.2) internal successors, (138), 119 states have internal predecessors, (138), 49 states have call successors, (49), 13 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-19 22:06:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 255 transitions. [2022-07-19 22:06:18,634 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 255 transitions. Word has length 157 [2022-07-19 22:06:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:18,634 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 255 transitions. [2022-07-19 22:06:18,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:06:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 255 transitions. [2022-07-19 22:06:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 22:06:18,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:18,636 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:18,657 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 22:06:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 22:06:18,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1841607645, now seen corresponding path program 1 times [2022-07-19 22:06:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774430004] [2022-07-19 22:06:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:06:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:06:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:06:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:06:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:06:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:06:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:06:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:06:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:06:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:06:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:06:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 22:06:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:06:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-19 22:06:19,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774430004] [2022-07-19 22:06:19,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774430004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841254313] [2022-07-19 22:06:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:19,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:19,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:19,328 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 22:06:19,373 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 22:06:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:19,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-19 22:06:19,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:31,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-19 22:06:31,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-19 22:06:31,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-19 22:06:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-19 22:06:31,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:31,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841254313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:31,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:31,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 18 [2022-07-19 22:06:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589662812] [2022-07-19 22:06:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:31,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 22:06:31,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 22:06:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=255, Unknown=2, NotChecked=0, Total=306 [2022-07-19 22:06:31,168 INFO L87 Difference]: Start difference. First operand 181 states and 255 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:06:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:34,681 INFO L93 Difference]: Finished difference Result 395 states and 580 transitions. [2022-07-19 22:06:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:06:34,681 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 157 [2022-07-19 22:06:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:34,683 INFO L225 Difference]: With dead ends: 395 [2022-07-19 22:06:34,683 INFO L226 Difference]: Without dead ends: 252 [2022-07-19 22:06:34,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=87, Invalid=416, Unknown=3, NotChecked=0, Total=506 [2022-07-19 22:06:34,686 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 218 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:34,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1081 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1470 Invalid, 0 Unknown, 188 Unchecked, 1.3s Time] [2022-07-19 22:06:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-19 22:06:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 202. [2022-07-19 22:06:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 130 states have (on average 1.1846153846153846) internal successors, (154), 134 states have internal predecessors, (154), 53 states have call successors, (53), 14 states have call predecessors, (53), 18 states have return successors, (82), 53 states have call predecessors, (82), 52 states have call successors, (82) [2022-07-19 22:06:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2022-07-19 22:06:34,701 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 157 [2022-07-19 22:06:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:34,702 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2022-07-19 22:06:34,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-19 22:06:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2022-07-19 22:06:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 22:06:34,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:34,703 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:34,725 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 22:06:34,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 22:06:34,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -208801253, now seen corresponding path program 1 times [2022-07-19 22:06:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:34,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136663510] [2022-07-19 22:06:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:34,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:06:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:06:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:06:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:06:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:06:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:06:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:06:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:06:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:06:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:06:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:06:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:06:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 22:06:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:06:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-19 22:06:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136663510] [2022-07-19 22:06:35,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136663510] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805391571] [2022-07-19 22:06:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:35,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:35,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:35,120 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 22:06:35,145 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 22:06:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:35,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:06:35,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-19 22:06:35,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:35,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805391571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:35,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:35,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-19 22:06:35,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032039233] [2022-07-19 22:06:35,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:06:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:06:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:06:35,660 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:06:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:35,684 INFO L93 Difference]: Finished difference Result 353 states and 515 transitions. [2022-07-19 22:06:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:06:35,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 157 [2022-07-19 22:06:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:35,686 INFO L225 Difference]: With dead ends: 353 [2022-07-19 22:06:35,686 INFO L226 Difference]: Without dead ends: 190 [2022-07-19 22:06:35,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:06:35,688 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 6 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:35,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 628 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:06:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-19 22:06:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2022-07-19 22:06:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 124 states have internal predecessors, (142), 49 states have call successors, (49), 14 states have call predecessors, (49), 17 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-19 22:06:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 259 transitions. [2022-07-19 22:06:35,698 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 259 transitions. Word has length 157 [2022-07-19 22:06:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:35,698 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 259 transitions. [2022-07-19 22:06:35,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:06:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 259 transitions. [2022-07-19 22:06:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-19 22:06:35,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:35,700 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:35,746 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 22:06:35,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 22:06:35,900 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1424932433, now seen corresponding path program 1 times [2022-07-19 22:06:35,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:35,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616520120] [2022-07-19 22:06:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:06:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:06:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:06:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:06:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:06:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:06:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:06:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:06:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:06:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:06:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:06:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:06:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:06:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:06:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:06:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 22:06:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-07-19 22:06:36,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:36,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616520120] [2022-07-19 22:06:36,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616520120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:36,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:36,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:06:36,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515401802] [2022-07-19 22:06:36,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:36,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:06:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:06:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:06:36,258 INFO L87 Difference]: Start difference. First operand 187 states and 259 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-19 22:06:37,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:37,340 INFO L93 Difference]: Finished difference Result 349 states and 491 transitions. [2022-07-19 22:06:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:06:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 164 [2022-07-19 22:06:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:37,341 INFO L225 Difference]: With dead ends: 349 [2022-07-19 22:06:37,341 INFO L226 Difference]: Without dead ends: 190 [2022-07-19 22:06:37,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:06:37,343 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 123 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:37,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 562 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 22:06:37,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-19 22:06:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2022-07-19 22:06:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 120 states have (on average 1.175) internal successors, (141), 124 states have internal predecessors, (141), 49 states have call successors, (49), 14 states have call predecessors, (49), 17 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-19 22:06:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 258 transitions. [2022-07-19 22:06:37,353 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 258 transitions. Word has length 164 [2022-07-19 22:06:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:37,353 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 258 transitions. [2022-07-19 22:06:37,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-19 22:06:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 258 transitions. [2022-07-19 22:06:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 22:06:37,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:37,355 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:37,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 22:06:37,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 706686844, now seen corresponding path program 1 times [2022-07-19 22:06:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:37,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912286030] [2022-07-19 22:06:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 22:06:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:06:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:06:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:06:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:06:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:06:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 22:06:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:06:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 22:06:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 22:06:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 22:06:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 22:06:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 22:06:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-19 22:06:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:37,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912286030] [2022-07-19 22:06:37,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912286030] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:37,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476007484] [2022-07-19 22:06:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:37,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:37,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:37,756 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 22:06:37,757 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 22:06:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:38,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 212 conjunts are in the unsatisfiable core [2022-07-19 22:06:38,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:38,353 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 22:06:38,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:06:38,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:06:38,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-19 22:06:38,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:06:38,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:06:38,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-19 22:06:38,693 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 22:06:39,691 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-19 22:06:39,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-19 22:06:39,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:06:39,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-07-19 22:06:40,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-07-19 22:06:40,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:06:40,258 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-19 22:06:40,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-19 22:06:40,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-19 22:06:40,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-19 22:06:40,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-07-19 22:06:40,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:06:40,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-19 22:06:40,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-07-19 22:06:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 231 proven. 24 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-19 22:06:41,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:42,245 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2832 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2832) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) (+ |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset| 8)) 0))) (forall ((v_ArrVal_2834 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_2834) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-19 22:06:42,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476007484] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:42,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:06:42,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 31] total 36 [2022-07-19 22:06:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554760811] [2022-07-19 22:06:42,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 22:06:42,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 22:06:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2155, Unknown=46, NotChecked=94, Total=2450 [2022-07-19 22:06:42,327 INFO L87 Difference]: Start difference. First operand 187 states and 258 transitions. Second operand has 36 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 31 states have internal predecessors, (134), 10 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-19 22:06:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:43,474 INFO L93 Difference]: Finished difference Result 368 states and 504 transitions. [2022-07-19 22:06:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 22:06:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 31 states have internal predecessors, (134), 10 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 175 [2022-07-19 22:06:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:43,476 INFO L225 Difference]: With dead ends: 368 [2022-07-19 22:06:43,476 INFO L226 Difference]: Without dead ends: 213 [2022-07-19 22:06:43,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 188 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=265, Invalid=3589, Unknown=56, NotChecked=122, Total=4032 [2022-07-19 22:06:43,478 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 126 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1357 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:43,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1299 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 611 Invalid, 0 Unknown, 1357 Unchecked, 0.6s Time] [2022-07-19 22:06:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-19 22:06:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 205. [2022-07-19 22:06:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 139 states have internal predecessors, (159), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2022-07-19 22:06:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 267 transitions. [2022-07-19 22:06:43,497 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 267 transitions. Word has length 175 [2022-07-19 22:06:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:43,498 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 267 transitions. [2022-07-19 22:06:43,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 31 states have internal predecessors, (134), 10 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2022-07-19 22:06:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 267 transitions. [2022-07-19 22:06:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:06:43,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:43,500 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:43,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-19 22:06:43,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 22:06:43,715 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:43,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1314967907, now seen corresponding path program 2 times [2022-07-19 22:06:43,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:43,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273775104] [2022-07-19 22:06:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:06:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 22:06:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:06:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:06:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:06:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:06:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 22:06:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:06:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:06:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:06:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:06:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:06:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:06:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 22:06:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:06:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-19 22:06:44,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273775104] [2022-07-19 22:06:44,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273775104] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117250745] [2022-07-19 22:06:44,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:06:44,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:44,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:44,210 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 22:06:44,212 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 22:06:44,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:06:44,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:06:45,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 160 conjunts are in the unsatisfiable core [2022-07-19 22:06:45,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:45,016 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 22:06:45,099 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 22:06:45,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 22:06:45,186 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 22:06:45,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-19 22:06:45,235 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 22:06:45,907 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 11 treesize of output 5 [2022-07-19 22:06:45,919 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-19 22:06:45,919 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 20 treesize of output 22 [2022-07-19 22:06:45,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:06:50,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:06:50,161 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 22:06:54,346 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_BEFORE_CALL_3| Int)) (= (select |c_#valid| |v_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base_BEFORE_CALL_3|) 1)) (exists ((v_ArrVal_3367 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_3367) |c_#memory_int|))) is different from true [2022-07-19 22:06:54,365 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:06:54,365 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 22:06:54,370 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 22:06:54,492 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:06:54,492 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 22:06:55,176 INFO L356 Elim1Store]: treesize reduction 28, result has 55.6 percent of original size [2022-07-19 22:06:55,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 61 [2022-07-19 22:06:55,733 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:06:55,733 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 22:06:55,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 22:06:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 111 proven. 173 refuted. 0 times theorem prover too weak. 65 trivial. 1 not checked. [2022-07-19 22:06:56,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:56,647 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3370 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_3370) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0)) is different from false [2022-07-19 22:06:56,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117250745] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:56,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:06:56,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 46] total 52 [2022-07-19 22:06:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513858289] [2022-07-19 22:06:56,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-19 22:06:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:56,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-19 22:06:56,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=3502, Unknown=38, NotChecked=242, Total=4032 [2022-07-19 22:06:56,721 INFO L87 Difference]: Start difference. First operand 205 states and 267 transitions. Second operand has 52 states, 49 states have (on average 3.0816326530612246) internal successors, (151), 44 states have internal predecessors, (151), 15 states have call successors, (49), 13 states have call predecessors, (49), 12 states have return successors, (46), 13 states have call predecessors, (46), 15 states have call successors, (46) [2022-07-19 22:07:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:11,082 INFO L93 Difference]: Finished difference Result 451 states and 623 transitions. [2022-07-19 22:07:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-19 22:07:11,083 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 3.0816326530612246) internal successors, (151), 44 states have internal predecessors, (151), 15 states have call successors, (49), 13 states have call predecessors, (49), 12 states have return successors, (46), 13 states have call predecessors, (46), 15 states have call successors, (46) Word has length 176 [2022-07-19 22:07:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:11,084 INFO L225 Difference]: With dead ends: 451 [2022-07-19 22:07:11,084 INFO L226 Difference]: Without dead ends: 296 [2022-07-19 22:07:11,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 167 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=574, Invalid=7933, Unknown=57, NotChecked=366, Total=8930 [2022-07-19 22:07:11,087 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 214 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 4451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2980 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:11,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 2621 Invalid, 4451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1269 Invalid, 0 Unknown, 2980 Unchecked, 0.9s Time] [2022-07-19 22:07:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-19 22:07:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 278. [2022-07-19 22:07:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 184 states have (on average 1.1684782608695652) internal successors, (215), 188 states have internal predecessors, (215), 66 states have call successors, (66), 24 states have call predecessors, (66), 27 states have return successors, (99), 65 states have call predecessors, (99), 65 states have call successors, (99) [2022-07-19 22:07:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 380 transitions. [2022-07-19 22:07:11,102 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 380 transitions. Word has length 176 [2022-07-19 22:07:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:11,102 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 380 transitions. [2022-07-19 22:07:11,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 3.0816326530612246) internal successors, (151), 44 states have internal predecessors, (151), 15 states have call successors, (49), 13 states have call predecessors, (49), 12 states have return successors, (46), 13 states have call predecessors, (46), 15 states have call successors, (46) [2022-07-19 22:07:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 380 transitions. [2022-07-19 22:07:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 22:07:11,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:11,104 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:11,143 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 22:07:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 22:07:11,327 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1366434555, now seen corresponding path program 3 times [2022-07-19 22:07:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042018496] [2022-07-19 22:07:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:07:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 22:07:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:07:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:07:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:07:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:07:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:07:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:07:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:07:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:07:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:07:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:07:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 22:07:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:07:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 22:07:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:07:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:07:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-19 22:07:11,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:11,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042018496] [2022-07-19 22:07:11,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042018496] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:11,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043474493] [2022-07-19 22:07:11,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:07:11,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:11,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:11,865 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 22:07:11,866 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 22:07:13,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-19 22:07:13,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:07:13,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-19 22:07:13,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:13,834 INFO L356 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2022-07-19 22:07:13,835 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 22:07:13,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 22:07:13,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-07-19 22:07:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-19 22:07:14,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:07:14,247 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 22:07:14,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-07-19 22:07:14,253 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (or (= (mod (select (select (store |c_#memory_int| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_1) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0) (not (= (select v_arrayElimArr_1 |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.offset|) 0)))) is different from false [2022-07-19 22:07:14,263 WARN L833 $PredicateComparison]: unable to prove that (forall ((|aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (or (= (mod (select (select (store |c_#memory_int| |aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_arrayElimArr_1) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0) (not (= (select v_arrayElimArr_1 0) 0)))) is different from false [2022-07-19 22:07:14,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043474493] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:14,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:07:14,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 25 [2022-07-19 22:07:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808457313] [2022-07-19 22:07:14,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:07:14,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 22:07:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 22:07:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=726, Unknown=2, NotChecked=110, Total=930 [2022-07-19 22:07:14,271 INFO L87 Difference]: Start difference. First operand 278 states and 380 transitions. Second operand has 25 states, 23 states have (on average 4.869565217391305) internal successors, (112), 20 states have internal predecessors, (112), 8 states have call successors, (47), 7 states have call predecessors, (47), 5 states have return successors, (43), 6 states have call predecessors, (43), 8 states have call successors, (43) [2022-07-19 22:07:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:19,365 INFO L93 Difference]: Finished difference Result 638 states and 950 transitions. [2022-07-19 22:07:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-19 22:07:19,366 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.869565217391305) internal successors, (112), 20 states have internal predecessors, (112), 8 states have call successors, (47), 7 states have call predecessors, (47), 5 states have return successors, (43), 6 states have call predecessors, (43), 8 states have call successors, (43) Word has length 178 [2022-07-19 22:07:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:19,368 INFO L225 Difference]: With dead ends: 638 [2022-07-19 22:07:19,368 INFO L226 Difference]: Without dead ends: 421 [2022-07-19 22:07:19,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=279, Invalid=2589, Unknown=2, NotChecked=210, Total=3080 [2022-07-19 22:07:19,370 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 385 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 4199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 656 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:19,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 2508 Invalid, 4199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 3237 Invalid, 0 Unknown, 656 Unchecked, 4.5s Time] [2022-07-19 22:07:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-19 22:07:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 315. [2022-07-19 22:07:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 215 states have (on average 1.1906976744186046) internal successors, (256), 221 states have internal predecessors, (256), 69 states have call successors, (69), 26 states have call predecessors, (69), 30 states have return successors, (91), 67 states have call predecessors, (91), 68 states have call successors, (91) [2022-07-19 22:07:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2022-07-19 22:07:19,391 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 416 transitions. Word has length 178 [2022-07-19 22:07:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:19,392 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 416 transitions. [2022-07-19 22:07:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.869565217391305) internal successors, (112), 20 states have internal predecessors, (112), 8 states have call successors, (47), 7 states have call predecessors, (47), 5 states have return successors, (43), 6 states have call predecessors, (43), 8 states have call successors, (43) [2022-07-19 22:07:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 416 transitions. [2022-07-19 22:07:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-19 22:07:19,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:19,393 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:19,417 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 22:07:19,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 22:07:19,607 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1413838340, now seen corresponding path program 1 times [2022-07-19 22:07:19,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:19,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419532701] [2022-07-19 22:07:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:07:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 22:07:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:07:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:07:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:07:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:07:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:07:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:07:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:07:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:07:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:07:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:07:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 22:07:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:07:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 22:07:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:07:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:07:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-07-19 22:07:20,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:20,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419532701] [2022-07-19 22:07:20,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419532701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:20,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:20,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 22:07:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823668317] [2022-07-19 22:07:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:20,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:07:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:20,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:07:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:07:20,142 INFO L87 Difference]: Start difference. First operand 315 states and 416 transitions. Second operand has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-19 22:07:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:21,897 INFO L93 Difference]: Finished difference Result 331 states and 446 transitions. [2022-07-19 22:07:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 22:07:21,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2022-07-19 22:07:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:21,900 INFO L225 Difference]: With dead ends: 331 [2022-07-19 22:07:21,900 INFO L226 Difference]: Without dead ends: 329 [2022-07-19 22:07:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:07:21,901 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 147 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:21,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1271 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 22:07:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-19 22:07:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 315. [2022-07-19 22:07:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 222 states have internal predecessors, (257), 68 states have call successors, (68), 26 states have call predecessors, (68), 30 states have return successors, (101), 66 states have call predecessors, (101), 67 states have call successors, (101) [2022-07-19 22:07:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 426 transitions. [2022-07-19 22:07:21,919 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 426 transitions. Word has length 180 [2022-07-19 22:07:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:21,920 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 426 transitions. [2022-07-19 22:07:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 11 states have internal predecessors, (69), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-19 22:07:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 426 transitions. [2022-07-19 22:07:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 22:07:21,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:21,921 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:21,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 22:07:21,922 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1583797844, now seen corresponding path program 1 times [2022-07-19 22:07:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:21,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230950913] [2022-07-19 22:07:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:07:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 22:07:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:07:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:07:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:07:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:07:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:07:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:07:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:07:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:07:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:07:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 22:07:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 22:07:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:07:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:07:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:07:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 22:07:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-07-19 22:07:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:22,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230950913] [2022-07-19 22:07:22,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230950913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:22,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:22,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:07:22,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082303947] [2022-07-19 22:07:22,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:22,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:07:22,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:07:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:07:22,235 INFO L87 Difference]: Start difference. First operand 315 states and 426 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 22:07:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:22,716 INFO L93 Difference]: Finished difference Result 474 states and 645 transitions. [2022-07-19 22:07:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:07:22,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 182 [2022-07-19 22:07:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:22,718 INFO L225 Difference]: With dead ends: 474 [2022-07-19 22:07:22,718 INFO L226 Difference]: Without dead ends: 321 [2022-07-19 22:07:22,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:07:22,719 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 106 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:22,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 376 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:07:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-19 22:07:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 318. [2022-07-19 22:07:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 219 states have (on average 1.187214611872146) internal successors, (260), 225 states have internal predecessors, (260), 68 states have call successors, (68), 26 states have call predecessors, (68), 30 states have return successors, (101), 66 states have call predecessors, (101), 67 states have call successors, (101) [2022-07-19 22:07:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 429 transitions. [2022-07-19 22:07:22,735 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 429 transitions. Word has length 182 [2022-07-19 22:07:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:22,735 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 429 transitions. [2022-07-19 22:07:22,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 22:07:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 429 transitions. [2022-07-19 22:07:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 22:07:22,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:22,737 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:22,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 22:07:22,737 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1161096018, now seen corresponding path program 1 times [2022-07-19 22:07:22,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:22,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889000704] [2022-07-19 22:07:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:22,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 22:07:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 22:07:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:07:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:07:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:07:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:07:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:07:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:07:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:07:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:07:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:07:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 22:07:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 22:07:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:07:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:07:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:07:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 22:07:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-19 22:07:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:23,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889000704] [2022-07-19 22:07:23,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889000704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:23,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857243634] [2022-07-19 22:07:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:23,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:23,346 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 22:07:23,347 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 22:07:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 3588 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-19 22:07:24,210 INFO L286 TraceCheckSpWp]: Computing forward predicates...