./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_be16_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:03:54,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:03:54,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:03:54,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:03:54,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:03:54,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:03:54,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:03:54,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:03:54,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:03:54,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:03:54,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:03:54,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:03:54,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:03:54,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:03:54,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:03:54,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:03:54,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:03:54,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:03:54,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:03:54,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:03:54,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:03:54,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:03:54,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:03:54,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:03:54,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:03:54,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:03:54,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:03:54,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:03:54,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:03:54,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:03:54,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:03:54,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:03:54,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:03:54,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:03:54,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:03:54,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:03:54,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:03:54,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:03:54,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:03:54,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:03:54,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:03:54,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:03:54,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:03:54,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:03:54,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:03:54,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:03:54,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:03:54,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:03:54,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:03:54,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:03:54,632 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:03:54,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:03:54,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:03:54,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:03:54,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:03:54,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:03:54,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:03:54,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:03:54,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:03:54,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:03:54,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:03:54,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:03:54,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:03:54,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:03:54,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:03:54,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:03:54,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:03:54,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:03:54,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:03:54,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:03:54,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:03:54,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:03:54,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:03:54,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb [2021-12-14 17:03:54,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:03:54,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:03:54,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:03:54,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:03:54,860 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:03:54,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2021-12-14 17:03:54,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b99d8feca/353c8f7083514a9fa69a2148bdaa0fe7/FLAG40ea43ab9 [2021-12-14 17:03:55,429 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:03:55,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2021-12-14 17:03:55,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b99d8feca/353c8f7083514a9fa69a2148bdaa0fe7/FLAG40ea43ab9 [2021-12-14 17:03:55,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b99d8feca/353c8f7083514a9fa69a2148bdaa0fe7 [2021-12-14 17:03:55,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:03:55,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:03:55,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:03:55,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:03:55,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:03:55,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:03:55" (1/1) ... [2021-12-14 17:03:55,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fefce12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:55, skipping insertion in model container [2021-12-14 17:03:55,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:03:55" (1/1) ... [2021-12-14 17:03:55,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:03:55,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:03:55,970 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_be16_harness.i[4499,4512] [2021-12-14 17:03:55,976 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_be16_harness.i[4559,4572] [2021-12-14 17:03:56,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,585 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:56,820 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:03:56,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:03:56,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:03:56,822 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:03:56,823 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:03:56,823 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:03:56,824 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:03:56,824 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:03:56,824 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:03:56,825 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:03:56,953 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:03:57,033 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,033 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:03:57,137 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:03:57,154 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_be16_harness.i[4499,4512] [2021-12-14 17:03:57,156 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_be16_harness.i[4559,4572] [2021-12-14 17:03:57,185 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,202 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,243 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:03:57,243 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:03:57,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:03:57,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:03:57,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:03:57,247 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:03:57,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:03:57,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:03:57,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:03:57,249 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:03:57,266 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:03:57,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:03:57,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:03:57,488 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:03:57,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57 WrapperNode [2021-12-14 17:03:57,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:03:57,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:03:57,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:03:57,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:03:57,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,663 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 975 [2021-12-14 17:03:57,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:03:57,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:03:57,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:03:57,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:03:57,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:03:57,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:03:57,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:03:57,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:03:57,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (1/1) ... [2021-12-14 17:03:57,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:03:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:03:57,786 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) [2021-12-14 17:03:57,801 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 [2021-12-14 17:03:57,811 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2021-12-14 17:03:57,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2021-12-14 17:03:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-14 17:03:57,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-14 17:03:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2021-12-14 17:03:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:03:57,812 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:03:57,812 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:03:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-14 17:03:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:03:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:03:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:03:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:03:57,815 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:03:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:03:57,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:03:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:03:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2021-12-14 17:03:57,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2021-12-14 17:03:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:03:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:03:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:03:57,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:03:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:03:57,816 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:03:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-14 17:03:57,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-14 17:03:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:03:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:03:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-14 17:03:57,817 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:03:57,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:03:57,818 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-14 17:03:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:03:58,078 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:03:58,086 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:03:58,949 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:03:58,961 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:03:58,961 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:03:58,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:03:58 BoogieIcfgContainer [2021-12-14 17:03:58,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:03:58,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:03:58,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:03:58,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:03:58,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:03:55" (1/3) ... [2021-12-14 17:03:58,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42952125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:03:58, skipping insertion in model container [2021-12-14 17:03:58,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:03:57" (2/3) ... [2021-12-14 17:03:58,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42952125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:03:58, skipping insertion in model container [2021-12-14 17:03:58,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:03:58" (3/3) ... [2021-12-14 17:03:58,969 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness.i [2021-12-14 17:03:58,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:03:58,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:03:59,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:03:59,034 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:03:59,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:03:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 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) [2021-12-14 17:03:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 17:03:59,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:03:59,063 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:03:59,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:03:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:03:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash -995370876, now seen corresponding path program 1 times [2021-12-14 17:03:59,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:03:59,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819273709] [2021-12-14 17:03:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:03:59,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:03:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:03:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:03:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:03:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:03:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:03:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:03:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:03:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:03:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:03:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:03:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:03:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:03:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:03:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:03:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:03:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:03:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:03:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:03:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:03:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:03:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-14 17:03:59,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:03:59,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819273709] [2021-12-14 17:03:59,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819273709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:03:59,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:03:59,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:03:59,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687198642] [2021-12-14 17:03:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:03:59,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:03:59,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:03:59,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:03:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:03:59,694 INFO L87 Difference]: Start difference. First operand has 158 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 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) [2021-12-14 17:04:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:00,141 INFO L93 Difference]: Finished difference Result 316 states and 460 transitions. [2021-12-14 17:04:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:04:00,143 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 [2021-12-14 17:04:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:00,150 INFO L225 Difference]: With dead ends: 316 [2021-12-14 17:04:00,150 INFO L226 Difference]: Without dead ends: 159 [2021-12-14 17:04:00,154 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:04:00,155 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 109 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:00,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 275 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 17:04:00,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-14 17:04:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-12-14 17:04:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 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) [2021-12-14 17:04:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 207 transitions. [2021-12-14 17:04:00,189 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 207 transitions. Word has length 124 [2021-12-14 17:04:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:00,189 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 207 transitions. [2021-12-14 17:04:00,189 INFO L471 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) [2021-12-14 17:04:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 207 transitions. [2021-12-14 17:04:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 17:04:00,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:00,192 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:00,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:04:00,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1202675202, now seen corresponding path program 1 times [2021-12-14 17:04:00,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:00,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360422466] [2021-12-14 17:04:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:00,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:04:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:04:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:04:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:04:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:04:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:04:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:04:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:04:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:04:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:04:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:04:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:04:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:04:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:04:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-14 17:04:00,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:00,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360422466] [2021-12-14 17:04:00,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360422466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:00,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472671828] [2021-12-14 17:04:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:00,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:00,503 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) [2021-12-14 17:04:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:04:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:00,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:04:00,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-14 17:04:01,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:01,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472671828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:01,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:01,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-14 17:04:01,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953960237] [2021-12-14 17:04:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:01,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:04:01,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:01,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:04:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:04:01,274 INFO L87 Difference]: Start difference. First operand 152 states and 207 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) [2021-12-14 17:04:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:01,466 INFO L93 Difference]: Finished difference Result 280 states and 393 transitions. [2021-12-14 17:04:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:04:01,467 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 [2021-12-14 17:04:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:01,468 INFO L225 Difference]: With dead ends: 280 [2021-12-14 17:04:01,469 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 17:04:01,469 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:04:01,470 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 230 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:01,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 428 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 17:04:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 17:04:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-12-14 17:04:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 217 transitions. [2021-12-14 17:04:01,498 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 217 transitions. Word has length 124 [2021-12-14 17:04:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:01,498 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 217 transitions. [2021-12-14 17:04:01,498 INFO L471 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) [2021-12-14 17:04:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 217 transitions. [2021-12-14 17:04:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 17:04:01,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:01,500 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:01,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:01,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:01,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2041589987, now seen corresponding path program 1 times [2021-12-14 17:04:01,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:01,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065825877] [2021-12-14 17:04:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:01,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:04:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:04:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:04:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:04:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:04:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:04:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:04:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-14 17:04:02,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:02,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065825877] [2021-12-14 17:04:02,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065825877] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:02,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483778657] [2021-12-14 17:04:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:02,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:02,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:02,188 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) [2021-12-14 17:04:02,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:04:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:02,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:04:02,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-14 17:04:02,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:02,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483778657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:02,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:02,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-14 17:04:02,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380099588] [2021-12-14 17:04:02,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:02,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:04:02,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:02,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:04:02,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:04:02,975 INFO L87 Difference]: Start difference. First operand 155 states and 217 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) [2021-12-14 17:04:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:03,175 INFO L93 Difference]: Finished difference Result 266 states and 374 transitions. [2021-12-14 17:04:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:04:03,176 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 [2021-12-14 17:04:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:03,177 INFO L225 Difference]: With dead ends: 266 [2021-12-14 17:04:03,177 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 17:04:03,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:04:03,179 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 248 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:03,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 566 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 17:04:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 17:04:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-12-14 17:04:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 215 transitions. [2021-12-14 17:04:03,188 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 215 transitions. Word has length 126 [2021-12-14 17:04:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:03,188 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 215 transitions. [2021-12-14 17:04:03,189 INFO L471 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) [2021-12-14 17:04:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 215 transitions. [2021-12-14 17:04:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-14 17:04:03,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:03,190 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:03,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:03,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 17:04:03,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:03,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 827031262, now seen corresponding path program 2 times [2021-12-14 17:04:03,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:03,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242420262] [2021-12-14 17:04:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:03,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:04:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 17:04:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:04:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 17:04:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:04:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:04:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-14 17:04:03,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:03,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242420262] [2021-12-14 17:04:03,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242420262] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:03,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516470520] [2021-12-14 17:04:03,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:04:03,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:03,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:03,803 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) [2021-12-14 17:04:03,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:04:04,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:04:04,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:04:04,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-14 17:04:04,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-14 17:04:04,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:04,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516470520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:04,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:04,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 13 [2021-12-14 17:04:04,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607046396] [2021-12-14 17:04:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:04,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:04:04,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:04:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:04:04,402 INFO L87 Difference]: Start difference. First operand 155 states and 215 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) [2021-12-14 17:04:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:04,536 INFO L93 Difference]: Finished difference Result 260 states and 361 transitions. [2021-12-14 17:04:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:04:04,536 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 [2021-12-14 17:04:04,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:04,538 INFO L225 Difference]: With dead ends: 260 [2021-12-14 17:04:04,538 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 17:04:04,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:04:04,539 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 105 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:04,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1142 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 17:04:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 17:04:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-12-14 17:04:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 212 transitions. [2021-12-14 17:04:04,548 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 212 transitions. Word has length 128 [2021-12-14 17:04:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:04,548 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 212 transitions. [2021-12-14 17:04:04,548 INFO L471 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) [2021-12-14 17:04:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 212 transitions. [2021-12-14 17:04:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 17:04:04,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:04,550 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:04,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:04,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:04,765 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1738421827, now seen corresponding path program 3 times [2021-12-14 17:04:04,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:04,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204766345] [2021-12-14 17:04:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:04,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:04:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:04:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:04:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:04:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:04:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:04:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-14 17:04:05,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:05,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204766345] [2021-12-14 17:04:05,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204766345] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:05,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20301983] [2021-12-14 17:04:05,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:04:05,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:05,122 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) [2021-12-14 17:04:05,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:04:05,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-14 17:04:05,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:04:05,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 17:04:05,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-14 17:04:05,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:05,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20301983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:05,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:05,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-14 17:04:05,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500707184] [2021-12-14 17:04:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:05,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:04:05,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:04:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:04:05,788 INFO L87 Difference]: Start difference. First operand 155 states and 212 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) [2021-12-14 17:04:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:05,887 INFO L93 Difference]: Finished difference Result 255 states and 347 transitions. [2021-12-14 17:04:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:04:05,888 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 [2021-12-14 17:04:05,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:05,889 INFO L225 Difference]: With dead ends: 255 [2021-12-14 17:04:05,889 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 17:04:05,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:04:05,890 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:05,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1124 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 17:04:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 17:04:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-12-14 17:04:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 211 transitions. [2021-12-14 17:04:05,898 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 211 transitions. Word has length 130 [2021-12-14 17:04:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:05,898 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 211 transitions. [2021-12-14 17:04:05,899 INFO L471 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) [2021-12-14 17:04:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 211 transitions. [2021-12-14 17:04:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-14 17:04:05,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:05,900 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:05,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:06,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:06,119 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1033938280, now seen corresponding path program 4 times [2021-12-14 17:04:06,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:06,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698022079] [2021-12-14 17:04:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:06,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:04:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:04:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:04:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:04:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:04:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:04:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-14 17:04:06,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:06,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698022079] [2021-12-14 17:04:06,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698022079] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:06,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24981064] [2021-12-14 17:04:06,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 17:04:06,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:06,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:06,450 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) [2021-12-14 17:04:06,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:04:06,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 17:04:06,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:04:06,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:04:06,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-14 17:04:07,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:07,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24981064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:07,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:07,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2021-12-14 17:04:07,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581934370] [2021-12-14 17:04:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:07,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:04:07,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:04:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:04:07,164 INFO L87 Difference]: Start difference. First operand 155 states and 211 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-14 17:04:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:07,504 INFO L93 Difference]: Finished difference Result 249 states and 335 transitions. [2021-12-14 17:04:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (21), 3 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 [2021-12-14 17:04:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:07,506 INFO L225 Difference]: With dead ends: 249 [2021-12-14 17:04:07,506 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 17:04:07,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2021-12-14 17:04:07,507 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 280 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:07,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1029 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:04:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 17:04:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 17:04:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-12-14 17:04:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 210 transitions. [2021-12-14 17:04:07,515 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 210 transitions. Word has length 132 [2021-12-14 17:04:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:07,516 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 210 transitions. [2021-12-14 17:04:07,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-14 17:04:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 210 transitions. [2021-12-14 17:04:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 17:04:07,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:07,518 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:07,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:07,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:07,737 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:07,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1812113485, now seen corresponding path program 1 times [2021-12-14 17:04:07,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:07,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286143005] [2021-12-14 17:04:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:07,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:04:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:04:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:04:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:04:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:04:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:04:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-14 17:04:08,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:08,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286143005] [2021-12-14 17:04:08,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286143005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:08,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:08,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:04:08,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505711737] [2021-12-14 17:04:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:08,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:04:08,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:04:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:08,068 INFO L87 Difference]: Start difference. First operand 155 states and 210 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) [2021-12-14 17:04:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:09,069 INFO L93 Difference]: Finished difference Result 174 states and 241 transitions. [2021-12-14 17:04:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:04:09,070 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 [2021-12-14 17:04:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:09,071 INFO L225 Difference]: With dead ends: 174 [2021-12-14 17:04:09,071 INFO L226 Difference]: Without dead ends: 172 [2021-12-14 17:04:09,071 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:04:09,072 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 131 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:09,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1096 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 17:04:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-14 17:04:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 164. [2021-12-14 17:04:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.2) internal successors, (120), 103 states have internal predecessors, (120), 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) [2021-12-14 17:04:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2021-12-14 17:04:09,081 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 134 [2021-12-14 17:04:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:09,081 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2021-12-14 17:04:09,081 INFO L471 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) [2021-12-14 17:04:09,082 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2021-12-14 17:04:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-14 17:04:09,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:09,083 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:09,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:04:09,083 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1740099605, now seen corresponding path program 1 times [2021-12-14 17:04:09,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:09,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391994909] [2021-12-14 17:04:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:09,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:04:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:04:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 17:04:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 17:04:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:04:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:04:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-14 17:04:09,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:09,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391994909] [2021-12-14 17:04:09,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391994909] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:09,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492053969] [2021-12-14 17:04:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:09,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:09,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:09,456 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) [2021-12-14 17:04:09,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:04:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:09,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-14 17:04:09,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:10,098 INFO L388 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 [2021-12-14 17:04:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-12-14 17:04:10,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:04:10,725 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-14 17:04:10,726 INFO L388 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 [2021-12-14 17:04:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-14 17:04:10,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492053969] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:04:10,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:04:10,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 29 [2021-12-14 17:04:10,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180157858] [2021-12-14 17:04:10,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:04:10,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-14 17:04:10,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-14 17:04:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2021-12-14 17:04:10,757 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand has 29 states, 26 states have (on average 4.5) internal successors, (117), 21 states have internal predecessors, (117), 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) [2021-12-14 17:04:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:13,718 INFO L93 Difference]: Finished difference Result 329 states and 462 transitions. [2021-12-14 17:04:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-14 17:04:13,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.5) internal successors, (117), 21 states have internal predecessors, (117), 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 138 [2021-12-14 17:04:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:13,720 INFO L225 Difference]: With dead ends: 329 [2021-12-14 17:04:13,720 INFO L226 Difference]: Without dead ends: 169 [2021-12-14 17:04:13,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 299 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-12-14 17:04:13,722 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 185 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:13,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 2575 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2641 Invalid, 0 Unknown, 192 Unchecked, 2.5s Time] [2021-12-14 17:04:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-14 17:04:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2021-12-14 17:04:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.19) internal successors, (119), 103 states have internal predecessors, (119), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (58), 48 states have call predecessors, (58), 48 states have call successors, (58) [2021-12-14 17:04:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2021-12-14 17:04:13,735 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 138 [2021-12-14 17:04:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:13,735 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2021-12-14 17:04:13,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.5) internal successors, (117), 21 states have internal predecessors, (117), 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) [2021-12-14 17:04:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2021-12-14 17:04:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-14 17:04:13,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:13,738 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:13,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-14 17:04:13,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:13,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1379257026, now seen corresponding path program 1 times [2021-12-14 17:04:13,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:13,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099993193] [2021-12-14 17:04:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:13,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:04:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:04:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:04:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:04:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:04:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:04:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:04:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:04:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:04:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:04:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 17:04:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:04:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:04:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:04:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-14 17:04:14,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099993193] [2021-12-14 17:04:14,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099993193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:14,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:14,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:04:14,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506451107] [2021-12-14 17:04:14,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:14,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:04:14,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:04:14,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:04:14,304 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:04:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:15,186 INFO L93 Difference]: Finished difference Result 295 states and 412 transitions. [2021-12-14 17:04:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:04:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2021-12-14 17:04:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:15,188 INFO L225 Difference]: With dead ends: 295 [2021-12-14 17:04:15,188 INFO L226 Difference]: Without dead ends: 171 [2021-12-14 17:04:15,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:15,189 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 110 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:15,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 536 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 17:04:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-14 17:04:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2021-12-14 17:04:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.203883495145631) internal successors, (124), 107 states have internal predecessors, (124), 49 states have call successors, (49), 12 states have call predecessors, (49), 15 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2021-12-14 17:04:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 232 transitions. [2021-12-14 17:04:15,199 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 232 transitions. Word has length 153 [2021-12-14 17:04:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:15,200 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 232 transitions. [2021-12-14 17:04:15,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:04:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 232 transitions. [2021-12-14 17:04:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-14 17:04:15,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:15,215 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:15,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:04:15,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:15,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:15,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1381363157, now seen corresponding path program 1 times [2021-12-14 17:04:15,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:15,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051036475] [2021-12-14 17:04:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:15,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:04:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:04:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:04:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:04:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:04:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 17:04:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:04:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:04:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:04:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:04:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:04:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 17:04:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:04:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:04:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-14 17:04:15,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:15,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051036475] [2021-12-14 17:04:15,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051036475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:15,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688244818] [2021-12-14 17:04:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:15,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:15,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:15,607 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) [2021-12-14 17:04:15,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:04:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:04:16,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-14 17:04:16,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:16,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688244818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:16,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:16,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-12-14 17:04:16,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655196631] [2021-12-14 17:04:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:16,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:04:16,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:04:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:04:16,287 INFO L87 Difference]: Start difference. First operand 168 states and 232 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-12-14 17:04:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:16,416 INFO L93 Difference]: Finished difference Result 314 states and 446 transitions. [2021-12-14 17:04:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 154 [2021-12-14 17:04:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:16,418 INFO L225 Difference]: With dead ends: 314 [2021-12-14 17:04:16,418 INFO L226 Difference]: Without dead ends: 173 [2021-12-14 17:04:16,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:04:16,419 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 12 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:16,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1542 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-14 17:04:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-12-14 17:04:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 112 states have internal predecessors, (128), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-14 17:04:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 245 transitions. [2021-12-14 17:04:16,427 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 245 transitions. Word has length 154 [2021-12-14 17:04:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:16,427 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 245 transitions. [2021-12-14 17:04:16,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-12-14 17:04:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 245 transitions. [2021-12-14 17:04:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-14 17:04:16,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:16,429 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:16,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:16,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:16,643 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 137999856, now seen corresponding path program 1 times [2021-12-14 17:04:16,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:16,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079034391] [2021-12-14 17:04:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:16,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:04:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:04:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 17:04:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:04:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:04:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:04:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:04:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:04:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-14 17:04:16,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:16,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079034391] [2021-12-14 17:04:16,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079034391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:16,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153087550] [2021-12-14 17:04:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:16,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:17,008 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) [2021-12-14 17:04:17,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:04:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:17,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:04:17,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-14 17:04:17,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:17,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153087550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:17,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:17,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-12-14 17:04:17,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765678484] [2021-12-14 17:04:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:17,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:04:17,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:04:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:17,700 INFO L87 Difference]: Start difference. First operand 173 states and 245 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-12-14 17:04:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:17,992 INFO L93 Difference]: Finished difference Result 319 states and 469 transitions. [2021-12-14 17:04:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:04:17,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 156 [2021-12-14 17:04:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:17,994 INFO L225 Difference]: With dead ends: 319 [2021-12-14 17:04:17,994 INFO L226 Difference]: Without dead ends: 173 [2021-12-14 17:04:17,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:04:17,995 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 17 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 711 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 [2021-12-14 17:04:17,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 711 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2021-12-14 17:04:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-14 17:04:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-12-14 17:04:18,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 112 states have internal predecessors, (127), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-14 17:04:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 244 transitions. [2021-12-14 17:04:18,003 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 244 transitions. Word has length 156 [2021-12-14 17:04:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:18,003 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 244 transitions. [2021-12-14 17:04:18,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-12-14 17:04:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 244 transitions. [2021-12-14 17:04:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-14 17:04:18,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:18,019 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:18,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:18,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 17:04:18,239 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1704475858, now seen corresponding path program 1 times [2021-12-14 17:04:18,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:18,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600313840] [2021-12-14 17:04:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:18,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:04:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:04:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 17:04:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:04:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:04:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 17:04:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:04:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:04:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-14 17:04:18,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600313840] [2021-12-14 17:04:18,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600313840] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021048496] [2021-12-14 17:04:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:18,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:18,600 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) [2021-12-14 17:04:18,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:04:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:04:19,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 132 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-14 17:04:19,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:04:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-14 17:04:19,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021048496] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:19,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:04:19,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2021-12-14 17:04:19,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618905145] [2021-12-14 17:04:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:19,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:04:19,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:04:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:19,543 INFO L87 Difference]: Start difference. First operand 173 states and 244 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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) [2021-12-14 17:04:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:19,672 INFO L93 Difference]: Finished difference Result 313 states and 450 transitions. [2021-12-14 17:04:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:04:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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 156 [2021-12-14 17:04:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:19,674 INFO L225 Difference]: With dead ends: 313 [2021-12-14 17:04:19,674 INFO L226 Difference]: Without dead ends: 179 [2021-12-14 17:04:19,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:19,675 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 5 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:19,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 596 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-14 17:04:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2021-12-14 17:04:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 114 states have internal predecessors, (130), 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) [2021-12-14 17:04:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 247 transitions. [2021-12-14 17:04:19,684 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 247 transitions. Word has length 156 [2021-12-14 17:04:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:19,685 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 247 transitions. [2021-12-14 17:04:19,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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) [2021-12-14 17:04:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 247 transitions. [2021-12-14 17:04:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 17:04:19,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:19,687 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:19,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:19,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:19,907 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1045505707, now seen corresponding path program 1 times [2021-12-14 17:04:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:19,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064249737] [2021-12-14 17:04:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:19,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:04:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 17:04:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:04:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:04:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:04:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:04:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:04:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:04:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 17:04:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-14 17:04:20,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:20,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064249737] [2021-12-14 17:04:20,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064249737] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:20,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5144249] [2021-12-14 17:04:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:20,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:20,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:20,231 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) [2021-12-14 17:04:20,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 17:04:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-14 17:04:20,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:24,017 INFO L388 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 [2021-12-14 17:04:24,021 INFO L388 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 [2021-12-14 17:04:24,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-14 17:04:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-14 17:04:24,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:24,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5144249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:24,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:24,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 19 [2021-12-14 17:04:24,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991146744] [2021-12-14 17:04:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:24,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:04:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:04:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:04:24,192 INFO L87 Difference]: Start difference. First operand 176 states and 247 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 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) [2021-12-14 17:04:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:25,915 INFO L93 Difference]: Finished difference Result 385 states and 564 transitions. [2021-12-14 17:04:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 17:04:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 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 [2021-12-14 17:04:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:25,917 INFO L225 Difference]: With dead ends: 385 [2021-12-14 17:04:25,917 INFO L226 Difference]: Without dead ends: 247 [2021-12-14 17:04:25,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 178 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2021-12-14 17:04:25,919 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 337 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:25,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 896 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1291 Invalid, 0 Unknown, 204 Unchecked, 1.3s Time] [2021-12-14 17:04:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-14 17:04:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 197. [2021-12-14 17:04:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 125 states have (on average 1.168) internal successors, (146), 129 states have internal predecessors, (146), 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) [2021-12-14 17:04:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 281 transitions. [2021-12-14 17:04:25,929 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 281 transitions. Word has length 157 [2021-12-14 17:04:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:25,930 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 281 transitions. [2021-12-14 17:04:25,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 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) [2021-12-14 17:04:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 281 transitions. [2021-12-14 17:04:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 17:04:25,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:25,931 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:25,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:26,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 17:04:26,143 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:26,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1004903191, now seen corresponding path program 1 times [2021-12-14 17:04:26,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:26,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809474679] [2021-12-14 17:04:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:26,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:04:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 17:04:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 17:04:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:04:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:04:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:04:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:04:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:04:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 17:04:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-14 17:04:26,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:26,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809474679] [2021-12-14 17:04:26,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809474679] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:26,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116108003] [2021-12-14 17:04:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:26,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:26,480 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) [2021-12-14 17:04:26,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 17:04:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:04:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-14 17:04:27,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116108003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:27,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:27,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-14 17:04:27,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411124630] [2021-12-14 17:04:27,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:27,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:04:27,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:04:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:04:27,195 INFO L87 Difference]: Start difference. First operand 197 states and 281 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) [2021-12-14 17:04:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:27,218 INFO L93 Difference]: Finished difference Result 343 states and 499 transitions. [2021-12-14 17:04:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:04:27,219 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 [2021-12-14 17:04:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:27,222 INFO L225 Difference]: With dead ends: 343 [2021-12-14 17:04:27,222 INFO L226 Difference]: Without dead ends: 185 [2021-12-14 17:04:27,223 INFO L932 BasicCegarLoop]: 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 [2021-12-14 17:04:27,225 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 6 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 604 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 [2021-12-14 17:04:27,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 604 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:04:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-14 17:04:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-14 17:04:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 119 states have internal predecessors, (134), 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) [2021-12-14 17:04:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 251 transitions. [2021-12-14 17:04:27,234 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 251 transitions. Word has length 157 [2021-12-14 17:04:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:27,234 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 251 transitions. [2021-12-14 17:04:27,234 INFO L471 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) [2021-12-14 17:04:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 251 transitions. [2021-12-14 17:04:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-14 17:04:27,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:27,236 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:27,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:27,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-14 17:04:27,439 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:27,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1435718499, now seen corresponding path program 1 times [2021-12-14 17:04:27,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:27,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445180823] [2021-12-14 17:04:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:27,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:04:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:04:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:04:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:04:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:04:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:04:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:04:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:04:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:04:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:04:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-12-14 17:04:27,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445180823] [2021-12-14 17:04:27,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445180823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:27,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:27,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:04:27,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154104076] [2021-12-14 17:04:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:27,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:04:27,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:27,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:04:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:04:27,737 INFO L87 Difference]: Start difference. First operand 182 states and 251 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-14 17:04:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:28,644 INFO L93 Difference]: Finished difference Result 339 states and 475 transitions. [2021-12-14 17:04:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 164 [2021-12-14 17:04:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:28,645 INFO L225 Difference]: With dead ends: 339 [2021-12-14 17:04:28,645 INFO L226 Difference]: Without dead ends: 185 [2021-12-14 17:04:28,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:04:28,646 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 186 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:28,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 591 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 17:04:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-14 17:04:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-14 17:04:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 119 states have internal predecessors, (133), 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) [2021-12-14 17:04:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2021-12-14 17:04:28,655 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 164 [2021-12-14 17:04:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:28,656 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2021-12-14 17:04:28,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-14 17:04:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2021-12-14 17:04:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-14 17:04:28,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:28,657 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:28,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 17:04:28,657 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1024501214, now seen corresponding path program 1 times [2021-12-14 17:04:28,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:28,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101078853] [2021-12-14 17:04:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:04:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:04:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:04:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:04:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:04:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:04:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:04:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:04:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:04:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:04:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:04:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:04:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 17:04:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:04:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 17:04:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 17:04:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:04:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-14 17:04:29,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:29,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101078853] [2021-12-14 17:04:29,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101078853] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:29,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478752871] [2021-12-14 17:04:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:29,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:29,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:29,043 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) [2021-12-14 17:04:29,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-14 17:04:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-14 17:04:29,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:04:29,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:04:30,215 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-14 17:04:30,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-14 17:04:30,503 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:04:30,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 84 [2021-12-14 17:04:30,883 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2533 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2533) |c_#memory_int|)) is different from true [2021-12-14 17:04:30,888 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2536 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2536))) is different from true [2021-12-14 17:04:30,972 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-12-14 17:04:30,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 93 treesize of output 104 [2021-12-14 17:04:30,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-12-14 17:04:30,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:30,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-14 17:04:30,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364889939] [2021-12-14 17:04:30,977 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 17:04:30,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:04:30,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:04:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=440, Unknown=2, NotChecked=86, Total=600 [2021-12-14 17:04:30,979 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-14 17:04:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:04:30,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 115 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=440, Unknown=2, NotChecked=86, Total=600 [2021-12-14 17:04:30,980 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:30,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:04:31,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:31,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-14 17:04:31,201 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4d19b057 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-14 17:04:31,204 INFO L158 Benchmark]: Toolchain (without parser) took 35552.86ms. Allocated memory was 86.0MB in the beginning and 463.5MB in the end (delta: 377.5MB). Free memory was 58.8MB in the beginning and 347.2MB in the end (delta: -288.4MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2021-12-14 17:04:31,205 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 66.9MB in the beginning and 66.9MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:04:31,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1835.18ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 58.6MB in the beginning and 63.0MB in the end (delta: -4.4MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2021-12-14 17:04:31,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 173.76ms. Allocated memory is still 142.6MB. Free memory was 63.0MB in the beginning and 85.0MB in the end (delta: -22.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-12-14 17:04:31,205 INFO L158 Benchmark]: Boogie Preprocessor took 96.78ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 77.5MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 17:04:31,205 INFO L158 Benchmark]: RCFGBuilder took 1201.31ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 77.5MB in the beginning and 84.0MB in the end (delta: -6.5MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2021-12-14 17:04:31,205 INFO L158 Benchmark]: TraceAbstraction took 32240.17ms. Allocated memory was 180.4MB in the beginning and 463.5MB in the end (delta: 283.1MB). Free memory was 83.0MB in the beginning and 347.2MB in the end (delta: -264.2MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-14 17:04:31,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 66.9MB in the beginning and 66.9MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1835.18ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 58.6MB in the beginning and 63.0MB in the end (delta: -4.4MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 173.76ms. Allocated memory is still 142.6MB. Free memory was 63.0MB in the beginning and 85.0MB in the end (delta: -22.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.78ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 77.5MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1201.31ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 77.5MB in the beginning and 84.0MB in the end (delta: -6.5MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * TraceAbstraction took 32240.17ms. Allocated memory was 180.4MB in the beginning and 463.5MB in the end (delta: 283.1MB). Free memory was 83.0MB in the beginning and 347.2MB in the end (delta: -264.2MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4d19b057 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4d19b057: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-14 17:04:31,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_be16_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:04:32,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:04:32,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:04:32,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:04:32,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:04:32,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:04:32,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:04:32,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:04:32,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:04:32,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:04:32,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:04:32,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:04:32,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:04:32,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:04:32,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:04:32,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:04:32,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:04:32,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:04:32,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:04:32,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:04:32,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:04:32,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:04:32,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:04:32,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:04:32,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:04:32,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:04:32,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:04:32,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:04:32,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:04:32,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:04:32,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:04:32,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:04:32,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:04:32,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:04:32,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:04:32,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:04:32,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:04:32,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:04:32,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:04:32,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:04:32,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:04:32,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-14 17:04:33,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:04:33,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:04:33,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:04:33,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:04:33,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:04:33,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:04:33,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:04:33,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:04:33,013 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:04:33,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:04:33,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:04:33,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:04:33,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:04:33,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:04:33,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:04:33,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:04:33,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:04:33,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:04:33,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:04:33,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:04:33,017 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 17:04:33,017 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 17:04:33,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:04:33,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:04:33,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:04:33,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:04:33,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 17:04:33,018 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb [2021-12-14 17:04:33,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:04:33,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:04:33,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:04:33,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:04:33,249 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:04:33,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2021-12-14 17:04:33,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324b5f709/de73eb1dfbd547d8bd4f78be45d8a768/FLAG1bec26142 [2021-12-14 17:04:33,898 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:04:33,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2021-12-14 17:04:33,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324b5f709/de73eb1dfbd547d8bd4f78be45d8a768/FLAG1bec26142 [2021-12-14 17:04:34,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324b5f709/de73eb1dfbd547d8bd4f78be45d8a768 [2021-12-14 17:04:34,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:04:34,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:04:34,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:04:34,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:04:34,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:04:34,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:04:34" (1/1) ... [2021-12-14 17:04:34,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ff5441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:34, skipping insertion in model container [2021-12-14 17:04:34,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:04:34" (1/1) ... [2021-12-14 17:04:34,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:04:34,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:04:34,382 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_be16_harness.i[4499,4512] [2021-12-14 17:04:34,388 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_be16_harness.i[4559,4572] [2021-12-14 17:04:34,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:34,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,124 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:04:35,125 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:04:35,125 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:04:35,126 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:04:35,127 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:04:35,128 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:04:35,128 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:04:35,129 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:04:35,129 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:04:35,130 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:04:35,212 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:04:35,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:04:35,385 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 17:04:35,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:04:35,421 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_be16_harness.i[4499,4512] [2021-12-14 17:04:35,421 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_be16_harness.i[4559,4572] [2021-12-14 17:04:35,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,504 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:04:35,504 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:04:35,505 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:04:35,505 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:04:35,507 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:04:35,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:04:35,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:04:35,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:04:35,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:04:35,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:04:35,535 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:04:35,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:04:35,640 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:04:35,656 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_be16_harness.i[4499,4512] [2021-12-14 17:04:35,657 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_be16_harness.i[4559,4572] [2021-12-14 17:04:35,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:04:35,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:04:35,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:04:35,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:04:35,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:04:35,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:04:35,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:04:35,712 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:04:35,712 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:04:35,712 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:04:35,736 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:04:35,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:35,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:04:35,990 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:04:35,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35 WrapperNode [2021-12-14 17:04:35,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:04:35,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:04:35,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:04:35,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:04:35,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,163 INFO L137 Inliner]: procedures = 711, calls = 2645, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 976 [2021-12-14 17:04:36,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:04:36,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:04:36,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:04:36,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:04:36,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:04:36,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:04:36,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:04:36,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:04:36,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (1/1) ... [2021-12-14 17:04:36,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:04:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:36,256 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) [2021-12-14 17:04:36,261 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 [2021-12-14 17:04:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2021-12-14 17:04:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2021-12-14 17:04:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-14 17:04:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-14 17:04:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2021-12-14 17:04:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:04:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:04:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:04:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 17:04:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-14 17:04:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-14 17:04:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2021-12-14 17:04:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:04:36,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:04:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:04:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:04:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:04:36,285 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2021-12-14 17:04:36,285 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-14 17:04:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:04:36,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:04:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:04:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:04:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-14 17:04:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-14 17:04:36,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-14 17:04:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-14 17:04:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:04:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-14 17:04:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:04:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-14 17:04:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-14 17:04:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:04:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:04:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:04:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:04:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-14 17:04:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-14 17:04:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-14 17:04:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:04:36,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE8 [2021-12-14 17:04:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intFLOATTYPE4 [2021-12-14 17:04:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-12-14 17:04:36,292 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:04:36,292 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:04:36,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-14 17:04:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-14 17:04:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-14 17:04:36,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-14 17:04:36,618 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:04:36,619 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:04:41,109 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:04:41,117 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:04:41,118 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:04:41,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:04:41 BoogieIcfgContainer [2021-12-14 17:04:41,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:04:41,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:04:41,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:04:41,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:04:41,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:04:34" (1/3) ... [2021-12-14 17:04:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466f0566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:04:41, skipping insertion in model container [2021-12-14 17:04:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:35" (2/3) ... [2021-12-14 17:04:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466f0566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:04:41, skipping insertion in model container [2021-12-14 17:04:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:04:41" (3/3) ... [2021-12-14 17:04:41,126 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness.i [2021-12-14 17:04:41,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:04:41,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:04:41,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:04:41,184 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:04:41,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:04:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 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) [2021-12-14 17:04:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 17:04:41,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:41,215 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:41,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash -995370876, now seen corresponding path program 1 times [2021-12-14 17:04:41,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:04:41,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295684358] [2021-12-14 17:04:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:41,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:04:41,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:04:41,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:04:41,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 17:04:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:42,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:04:42,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-14 17:04:42,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:42,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:04:42,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295684358] [2021-12-14 17:04:42,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295684358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:42,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:42,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:04:42,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071088397] [2021-12-14 17:04:42,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:42,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:04:42,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:04:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:04:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:04:42,299 INFO L87 Difference]: Start difference. First operand has 158 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 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 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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) [2021-12-14 17:04:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:42,325 INFO L93 Difference]: Finished difference Result 309 states and 450 transitions. [2021-12-14 17:04:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:04:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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 124 [2021-12-14 17:04:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:42,333 INFO L225 Difference]: With dead ends: 309 [2021-12-14 17:04:42,334 INFO L226 Difference]: Without dead ends: 152 [2021-12-14 17:04:42,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:04:42,339 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:42,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:04:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-14 17:04:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-12-14 17:04:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 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) [2021-12-14 17:04:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 207 transitions. [2021-12-14 17:04:42,372 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 207 transitions. Word has length 124 [2021-12-14 17:04:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:42,374 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 207 transitions. [2021-12-14 17:04:42,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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) [2021-12-14 17:04:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 207 transitions. [2021-12-14 17:04:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 17:04:42,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:42,376 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:42,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:42,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:04:42,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1202675202, now seen corresponding path program 1 times [2021-12-14 17:04:42,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:04:42,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810210785] [2021-12-14 17:04:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:42,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:04:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:04:42,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:04:42,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 17:04:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:43,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:04:43,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-14 17:04:43,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:43,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:04:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810210785] [2021-12-14 17:04:43,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810210785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:43,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:43,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:04:43,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279075021] [2021-12-14 17:04:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:43,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:04:43,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:04:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:04:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:04:43,774 INFO L87 Difference]: Start difference. First operand 152 states and 207 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2021-12-14 17:04:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:44,063 INFO L93 Difference]: Finished difference Result 280 states and 393 transitions. [2021-12-14 17:04:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:04:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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 [2021-12-14 17:04:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:44,069 INFO L225 Difference]: With dead ends: 280 [2021-12-14 17:04:44,069 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 17:04:44,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:04:44,070 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 51 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:44,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 659 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:04:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 17:04:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 17:04:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 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) [2021-12-14 17:04:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 217 transitions. [2021-12-14 17:04:44,084 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 217 transitions. Word has length 124 [2021-12-14 17:04:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:44,084 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 217 transitions. [2021-12-14 17:04:44,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2021-12-14 17:04:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 217 transitions. [2021-12-14 17:04:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 17:04:44,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:44,087 INFO L514 BasicCegarLoop]: 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] [2021-12-14 17:04:44,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:44,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:04:44,315 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2041589987, now seen corresponding path program 1 times [2021-12-14 17:04:44,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:04:44,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907836579] [2021-12-14 17:04:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:44,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:04:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:04:44,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 17:04:44,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 17:04:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:45,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 17:04:45,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:45,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 17:04:45,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-12-14 17:04:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-14 17:04:46,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:04:47,147 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-12-14 17:04:47,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1