./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_priority_queue_top_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 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:22:12,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:22:12,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:22:12,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:22:12,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:22:12,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:22:12,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:22:12,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:22:12,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:22:12,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:22:12,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:22:12,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:22:12,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:22:12,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:22:12,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:22:12,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:22:12,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:22:12,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:22:12,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:22:12,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:22:12,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:22:12,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:22:12,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:22:12,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:22:12,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:22:12,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:22:12,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:22:12,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:22:12,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:22:12,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:22:12,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:22:12,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:22:12,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:22:12,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:22:12,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:22:12,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:22:12,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:22:12,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:22:12,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:22:12,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:22:12,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:22:12,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:22:12,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:22:12,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:22:12,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:22:12,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:22:12,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:22:12,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:22:12,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:22:12,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:22:12,559 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:22:12,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:22:12,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:22:12,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:22:12,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:22:12,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:22:12,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:22:12,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:22:12,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:22:12,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:22:12,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:22:12,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:22:12,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:22:12,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:22:12,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:22:12,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:22:12,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:22:12,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:22:12,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:22:12,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:22:12,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:22:12,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:22:12,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2021-12-28 03:22:12,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:22:12,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:22:12,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:22:12,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:22:12,851 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:22:12,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-12-28 03:22:12,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc979a55d/3d374412315b40c0b5ea675945af28df/FLAG7c6546e71 [2021-12-28 03:22:13,490 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:22:13,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-12-28 03:22:13,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc979a55d/3d374412315b40c0b5ea675945af28df/FLAG7c6546e71 [2021-12-28 03:22:13,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc979a55d/3d374412315b40c0b5ea675945af28df [2021-12-28 03:22:13,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:22:13,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:22:13,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:22:13,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:22:13,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:22:13,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:13,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7f1c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:13, skipping insertion in model container [2021-12-28 03:22:13,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:22:13" (1/1) ... [2021-12-28 03:22:13,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:22:13,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:22:13,950 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_priority_queue_top_harness.i[4496,4509] [2021-12-28 03:22:13,955 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_priority_queue_top_harness.i[4556,4569] [2021-12-28 03:22:14,443 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:14,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,501 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,502 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,514 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:14,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:14,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:14,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:14,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:14,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:14,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:14,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:14,690 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:14,690 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:14,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:14,869 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:22:14,888 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_priority_queue_top_harness.i[4496,4509] [2021-12-28 03:22:14,888 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_priority_queue_top_harness.i[4556,4569] [2021-12-28 03:22:14,918 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:14,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:14,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:14,994 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:14,995 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:14,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:15,007 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:15,007 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:15,007 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:15,008 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:15,008 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:15,009 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:15,038 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:15,045 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:15,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:15,262 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:22:15,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15 WrapperNode [2021-12-28 03:22:15,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:22:15,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:22:15,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:22:15,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:22:15,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,403 INFO L137 Inliner]: procedures = 689, calls = 1536, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 719 [2021-12-28 03:22:15,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:22:15,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:22:15,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:22:15,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:22:15,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:22:15,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:22:15,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:22:15,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:22:15,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (1/1) ... [2021-12-28 03:22:15,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:22:15,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:15,512 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) [2021-12-28 03:22:15,543 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 [2021-12-28 03:22:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:22:15,550 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:22:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:22:15,550 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:22:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:22:15,551 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:22:15,551 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:22:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:22:15,552 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:22:15,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:22:15,553 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:22:15,553 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:22:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:22:15,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:22:15,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:22:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:22:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-28 03:22:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-28 03:22:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:22:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:22:15,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:22:15,555 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:22:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:22:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:22:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:22:15,556 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:22:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:22:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:22:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:22:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-28 03:22:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-28 03:22:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:22:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:22:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:22:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:22:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:22:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:22:15,558 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:22:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:22:15,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:22:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:22:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-28 03:22:15,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-28 03:22:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:22:15,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:22:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:22:15,817 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:22:15,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:22:16,367 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:22:16,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:22:16,372 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 03:22:16,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:22:16 BoogieIcfgContainer [2021-12-28 03:22:16,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:22:16,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:22:16,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:22:16,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:22:16,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:22:13" (1/3) ... [2021-12-28 03:22:16,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1c0794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:22:16, skipping insertion in model container [2021-12-28 03:22:16,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:15" (2/3) ... [2021-12-28 03:22:16,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1c0794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:22:16, skipping insertion in model container [2021-12-28 03:22:16,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:22:16" (3/3) ... [2021-12-28 03:22:16,378 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2021-12-28 03:22:16,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:22:16,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:22:16,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:22:16,410 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 [2021-12-28 03:22:16,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:22:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-28 03:22:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 03:22:16,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:16,430 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:16,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2080692148, now seen corresponding path program 1 times [2021-12-28 03:22:16,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:16,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118070622] [2021-12-28 03:22:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:16,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:22:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:22:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:22:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:22:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:22:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:22:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:22:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:22:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:22:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:22:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:22:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:22:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:22:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:22:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-28 03:22:16,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:16,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118070622] [2021-12-28 03:22:16,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118070622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:16,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:16,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:22:16,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732218816] [2021-12-28 03:22:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:16,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:22:16,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:22:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:16,982 INFO L87 Difference]: Start difference. First operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 03:22:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:17,410 INFO L93 Difference]: Finished difference Result 443 states and 653 transitions. [2021-12-28 03:22:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:22:17,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2021-12-28 03:22:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:17,419 INFO L225 Difference]: With dead ends: 443 [2021-12-28 03:22:17,420 INFO L226 Difference]: Without dead ends: 257 [2021-12-28 03:22:17,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:17,425 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 309 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:17,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 384 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:22:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-28 03:22:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2021-12-28 03:22:17,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 120 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-28 03:22:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2021-12-28 03:22:17,465 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 118 [2021-12-28 03:22:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:17,465 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2021-12-28 03:22:17,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-28 03:22:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2021-12-28 03:22:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 03:22:17,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:17,468 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:17,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:22:17,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:17,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash 440490954, now seen corresponding path program 1 times [2021-12-28 03:22:17,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:17,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559986963] [2021-12-28 03:22:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:17,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:22:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:22:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:22:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:22:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:22:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:22:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:22:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:22:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:22:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:22:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:22:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:22:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:22:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:22:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-28 03:22:17,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:17,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559986963] [2021-12-28 03:22:17,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559986963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:17,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:17,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:22:17,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850841668] [2021-12-28 03:22:17,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:17,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:22:17,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:17,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:22:17,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:17,803 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 03:22:18,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:18,467 INFO L93 Difference]: Finished difference Result 407 states and 561 transitions. [2021-12-28 03:22:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:22:18,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 118 [2021-12-28 03:22:18,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:18,470 INFO L225 Difference]: With dead ends: 407 [2021-12-28 03:22:18,470 INFO L226 Difference]: Without dead ends: 257 [2021-12-28 03:22:18,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:22:18,472 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 379 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:18,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 653 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:22:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-28 03:22:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2021-12-28 03:22:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 120 states have internal predecessors, (143), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-28 03:22:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2021-12-28 03:22:18,486 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 118 [2021-12-28 03:22:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:18,487 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2021-12-28 03:22:18,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 03:22:18,487 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2021-12-28 03:22:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 03:22:18,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:18,489 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:18,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:22:18,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1705196580, now seen corresponding path program 1 times [2021-12-28 03:22:18,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:18,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123632796] [2021-12-28 03:22:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:18,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:22:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:22:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:22:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:22:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:22:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:22:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:22:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:22:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:22:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:22:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:22:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:22:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:22:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:22:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:22:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 03:22:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 03:22:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-28 03:22:18,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:18,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123632796] [2021-12-28 03:22:18,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123632796] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:22:18,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057626845] [2021-12-28 03:22:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:18,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:18,803 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) [2021-12-28 03:22:18,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:22:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:19,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:22:19,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-28 03:22:19,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:19,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057626845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:19,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:22:19,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-28 03:22:19,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435303279] [2021-12-28 03:22:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:19,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:22:19,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:22:19,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:22:19,387 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-28 03:22:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:19,502 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2021-12-28 03:22:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:22:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 126 [2021-12-28 03:22:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:19,505 INFO L225 Difference]: With dead ends: 356 [2021-12-28 03:22:19,505 INFO L226 Difference]: Without dead ends: 189 [2021-12-28 03:22:19,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:22:19,506 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 78 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:19,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1296 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-28 03:22:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-28 03:22:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.2) internal successors, (144), 122 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-28 03:22:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2021-12-28 03:22:19,539 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 126 [2021-12-28 03:22:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:19,540 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2021-12-28 03:22:19,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-28 03:22:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2021-12-28 03:22:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 03:22:19,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:19,542 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:19,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:19,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:19,762 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -371731420, now seen corresponding path program 1 times [2021-12-28 03:22:19,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:19,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810623518] [2021-12-28 03:22:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:19,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:19,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:19,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381845208] [2021-12-28 03:22:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:19,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:19,807 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) [2021-12-28 03:22:19,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:22:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:20,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:22:20,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-28 03:22:20,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:20,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:20,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810623518] [2021-12-28 03:22:20,359 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:20,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381845208] [2021-12-28 03:22:20,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381845208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:20,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:20,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:22:20,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161654484] [2021-12-28 03:22:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:20,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:22:20,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:22:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:22:20,362 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 03:22:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:20,382 INFO L93 Difference]: Finished difference Result 344 states and 467 transitions. [2021-12-28 03:22:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-12-28 03:22:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:20,384 INFO L225 Difference]: With dead ends: 344 [2021-12-28 03:22:20,384 INFO L226 Difference]: Without dead ends: 194 [2021-12-28 03:22:20,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:20,385 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:20,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 713 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-28 03:22:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2021-12-28 03:22:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 124 states have internal predecessors, (146), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-28 03:22:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2021-12-28 03:22:20,394 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 141 [2021-12-28 03:22:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:20,395 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2021-12-28 03:22:20,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-28 03:22:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2021-12-28 03:22:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 03:22:20,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:20,396 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:20,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:20,615 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,SelfDestructingSolverStorable3 [2021-12-28 03:22:20,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 120894754, now seen corresponding path program 1 times [2021-12-28 03:22:20,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:20,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097602363] [2021-12-28 03:22:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:20,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:20,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:20,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496384155] [2021-12-28 03:22:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:20,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:20,674 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) [2021-12-28 03:22:20,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:22:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:21,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:22:21,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-28 03:22:21,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:21,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097602363] [2021-12-28 03:22:21,269 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:21,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496384155] [2021-12-28 03:22:21,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496384155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:21,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:21,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:22:21,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094569542] [2021-12-28 03:22:21,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:21,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:22:21,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:22:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:22:21,271 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-28 03:22:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:21,451 INFO L93 Difference]: Finished difference Result 346 states and 457 transitions. [2021-12-28 03:22:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:22:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-12-28 03:22:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:21,453 INFO L225 Difference]: With dead ends: 346 [2021-12-28 03:22:21,453 INFO L226 Difference]: Without dead ends: 191 [2021-12-28 03:22:21,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:22:21,454 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 278 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:21,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 929 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-28 03:22:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-12-28 03:22:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-28 03:22:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2021-12-28 03:22:21,464 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 141 [2021-12-28 03:22:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:21,465 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2021-12-28 03:22:21,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-28 03:22:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2021-12-28 03:22:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 03:22:21,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:21,467 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:21,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:21,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:21,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1915037087, now seen corresponding path program 1 times [2021-12-28 03:22:21,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:21,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230076584] [2021-12-28 03:22:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:21,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:21,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:21,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384436450] [2021-12-28 03:22:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:21,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:21,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:21,760 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) [2021-12-28 03:22:21,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:22:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:22:22,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:22:22,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:22,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:22,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230076584] [2021-12-28 03:22:22,402 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:22,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384436450] [2021-12-28 03:22:22,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384436450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:22,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:22,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:22:22,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074166529] [2021-12-28 03:22:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:22,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:22:22,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:22:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:22:22,404 INFO L87 Difference]: Start difference. First operand 191 states and 250 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-28 03:22:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:22,539 INFO L93 Difference]: Finished difference Result 359 states and 474 transitions. [2021-12-28 03:22:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:22:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 157 [2021-12-28 03:22:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:22,541 INFO L225 Difference]: With dead ends: 359 [2021-12-28 03:22:22,541 INFO L226 Difference]: Without dead ends: 191 [2021-12-28 03:22:22,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:22:22,543 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 116 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:22,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1385 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-28 03:22:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-12-28 03:22:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2021-12-28 03:22:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 249 transitions. [2021-12-28 03:22:22,552 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 249 transitions. Word has length 157 [2021-12-28 03:22:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:22,552 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 249 transitions. [2021-12-28 03:22:22,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-28 03:22:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 249 transitions. [2021-12-28 03:22:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-28 03:22:22,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:22,554 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:22,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:22,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:22,771 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 725110269, now seen corresponding path program 2 times [2021-12-28 03:22:22,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:22,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551235821] [2021-12-28 03:22:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:22,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:22,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:22,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089184519] [2021-12-28 03:22:22,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:22:22,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:22,829 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) [2021-12-28 03:22:22,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:22:23,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:22:23,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:22:23,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:22:23,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-28 03:22:23,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:23,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:23,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551235821] [2021-12-28 03:22:23,553 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:23,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089184519] [2021-12-28 03:22:23,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089184519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:23,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:23,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:22:23,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649780340] [2021-12-28 03:22:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:23,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:22:23,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:22:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:23,555 INFO L87 Difference]: Start difference. First operand 191 states and 249 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:22:23,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:23,862 INFO L93 Difference]: Finished difference Result 334 states and 442 transitions. [2021-12-28 03:22:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:22:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 172 [2021-12-28 03:22:23,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:23,864 INFO L225 Difference]: With dead ends: 334 [2021-12-28 03:22:23,864 INFO L226 Difference]: Without dead ends: 203 [2021-12-28 03:22:23,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:22:23,867 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 270 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:23,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1298 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:22:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-28 03:22:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-12-28 03:22:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.1875) internal successors, (152), 130 states have internal predecessors, (152), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2021-12-28 03:22:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 266 transitions. [2021-12-28 03:22:23,901 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 266 transitions. Word has length 172 [2021-12-28 03:22:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:23,902 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 266 transitions. [2021-12-28 03:22:23,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:22:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 266 transitions. [2021-12-28 03:22:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-28 03:22:23,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:23,906 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:23,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:24,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:24,116 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash -606014439, now seen corresponding path program 1 times [2021-12-28 03:22:24,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:24,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145932556] [2021-12-28 03:22:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:24,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:24,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:24,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639516724] [2021-12-28 03:22:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:24,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:24,208 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) [2021-12-28 03:22:24,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:22:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:24,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:22:24,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:22:24,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:24,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145932556] [2021-12-28 03:22:24,988 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:24,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639516724] [2021-12-28 03:22:24,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639516724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:24,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:24,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:22:24,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104973083] [2021-12-28 03:22:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:24,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:22:24,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:22:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:24,990 INFO L87 Difference]: Start difference. First operand 203 states and 266 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:25,341 INFO L93 Difference]: Finished difference Result 385 states and 510 transitions. [2021-12-28 03:22:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:22:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2021-12-28 03:22:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:25,344 INFO L225 Difference]: With dead ends: 385 [2021-12-28 03:22:25,344 INFO L226 Difference]: Without dead ends: 221 [2021-12-28 03:22:25,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:25,345 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 21 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:25,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1072 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:22:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-28 03:22:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2021-12-28 03:22:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2021-12-28 03:22:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2021-12-28 03:22:25,368 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 202 [2021-12-28 03:22:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:25,368 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2021-12-28 03:22:25,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2021-12-28 03:22:25,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-28 03:22:25,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:25,370 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:25,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:25,582 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 [2021-12-28 03:22:25,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 995056667, now seen corresponding path program 1 times [2021-12-28 03:22:25,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:25,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917061239] [2021-12-28 03:22:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:25,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:25,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:25,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410607661] [2021-12-28 03:22:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:25,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:25,717 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) [2021-12-28 03:22:25,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:22:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:26,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:22:26,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:22:26,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:26,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:26,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917061239] [2021-12-28 03:22:26,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:26,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410607661] [2021-12-28 03:22:26,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410607661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:26,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:22:26,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674499803] [2021-12-28 03:22:26,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:26,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:22:26,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:26,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:22:26,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:22:26,527 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:26,554 INFO L93 Difference]: Finished difference Result 379 states and 500 transitions. [2021-12-28 03:22:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:26,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2021-12-28 03:22:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:26,558 INFO L225 Difference]: With dead ends: 379 [2021-12-28 03:22:26,558 INFO L226 Difference]: Without dead ends: 211 [2021-12-28 03:22:26,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:26,561 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 3 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:26,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 709 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:26,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-28 03:22:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-12-28 03:22:26,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 136 states have internal predecessors, (159), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2021-12-28 03:22:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 273 transitions. [2021-12-28 03:22:26,583 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 273 transitions. Word has length 202 [2021-12-28 03:22:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:26,586 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 273 transitions. [2021-12-28 03:22:26,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 273 transitions. [2021-12-28 03:22:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-28 03:22:26,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:26,588 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:26,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:26,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:26,811 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:26,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1948525411, now seen corresponding path program 1 times [2021-12-28 03:22:26,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:26,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264208419] [2021-12-28 03:22:26,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:26,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:26,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:26,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422341048] [2021-12-28 03:22:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:26,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:26,897 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) [2021-12-28 03:22:26,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:22:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:27,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 116 conjunts are in the unsatisfiable core [2021-12-28 03:22:27,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:28,461 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:22:28,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-12-28 03:22:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-28 03:22:28,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:22:29,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:29,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264208419] [2021-12-28 03:22:29,725 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:29,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422341048] [2021-12-28 03:22:29,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422341048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:22:29,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:22:29,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-12-28 03:22:29,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106293683] [2021-12-28 03:22:29,727 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:22:29,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:22:29,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:22:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-12-28 03:22:29,729 INFO L87 Difference]: Start difference. First operand 209 states and 273 transitions. Second operand has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-28 03:22:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:34,912 INFO L93 Difference]: Finished difference Result 687 states and 927 transitions. [2021-12-28 03:22:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-28 03:22:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) Word has length 202 [2021-12-28 03:22:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:34,916 INFO L225 Difference]: With dead ends: 687 [2021-12-28 03:22:34,916 INFO L226 Difference]: Without dead ends: 529 [2021-12-28 03:22:34,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=311, Invalid=2238, Unknown=1, NotChecked=0, Total=2550 [2021-12-28 03:22:34,918 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 534 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 583 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:34,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 1410 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2770 Invalid, 0 Unknown, 583 Unchecked, 1.9s Time] [2021-12-28 03:22:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-28 03:22:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 395. [2021-12-28 03:22:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 257 states have (on average 1.1906614785992218) internal successors, (306), 263 states have internal predecessors, (306), 99 states have call successors, (99), 33 states have call predecessors, (99), 38 states have return successors, (112), 98 states have call predecessors, (112), 97 states have call successors, (112) [2021-12-28 03:22:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 517 transitions. [2021-12-28 03:22:34,937 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 517 transitions. Word has length 202 [2021-12-28 03:22:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:34,937 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 517 transitions. [2021-12-28 03:22:34,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-28 03:22:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 517 transitions. [2021-12-28 03:22:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-28 03:22:34,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:34,939 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:34,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-28 03:22:35,159 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,SelfDestructingSolverStorable9 [2021-12-28 03:22:35,160 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 425026459, now seen corresponding path program 1 times [2021-12-28 03:22:35,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:35,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033528588] [2021-12-28 03:22:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:35,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:35,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:35,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902808913] [2021-12-28 03:22:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:35,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:35,256 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) [2021-12-28 03:22:35,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:22:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:35,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-28 03:22:35,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:22:36,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:36,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:36,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033528588] [2021-12-28 03:22:36,026 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:36,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902808913] [2021-12-28 03:22:36,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902808913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:36,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:36,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:22:36,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142862395] [2021-12-28 03:22:36,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:36,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:22:36,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:36,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:22:36,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:36,029 INFO L87 Difference]: Start difference. First operand 395 states and 517 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:36,070 INFO L93 Difference]: Finished difference Result 649 states and 847 transitions. [2021-12-28 03:22:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:22:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2021-12-28 03:22:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:36,073 INFO L225 Difference]: With dead ends: 649 [2021-12-28 03:22:36,073 INFO L226 Difference]: Without dead ends: 419 [2021-12-28 03:22:36,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:36,076 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 8 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:36,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 982 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-28 03:22:36,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 407. [2021-12-28 03:22:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 269 states have (on average 1.1933085501858736) internal successors, (321), 275 states have internal predecessors, (321), 99 states have call successors, (99), 33 states have call predecessors, (99), 38 states have return successors, (112), 98 states have call predecessors, (112), 97 states have call successors, (112) [2021-12-28 03:22:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 532 transitions. [2021-12-28 03:22:36,097 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 532 transitions. Word has length 202 [2021-12-28 03:22:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 532 transitions. [2021-12-28 03:22:36,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 532 transitions. [2021-12-28 03:22:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-28 03:22:36,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:36,099 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:36,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:36,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:36,322 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1913156837, now seen corresponding path program 1 times [2021-12-28 03:22:36,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:36,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936239192] [2021-12-28 03:22:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:36,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:36,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:36,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059602295] [2021-12-28 03:22:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:36,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:36,396 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) [2021-12-28 03:22:36,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:22:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:36,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:22:36,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:22:37,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:37,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936239192] [2021-12-28 03:22:37,180 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059602295] [2021-12-28 03:22:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059602295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:37,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:37,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:22:37,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448732308] [2021-12-28 03:22:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:37,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:22:37,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:22:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:22:37,182 INFO L87 Difference]: Start difference. First operand 407 states and 532 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:37,216 INFO L93 Difference]: Finished difference Result 767 states and 1006 transitions. [2021-12-28 03:22:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2021-12-28 03:22:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:37,220 INFO L225 Difference]: With dead ends: 767 [2021-12-28 03:22:37,220 INFO L226 Difference]: Without dead ends: 399 [2021-12-28 03:22:37,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:37,222 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 2 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:37,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 712 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-28 03:22:37,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 397. [2021-12-28 03:22:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 259 states have (on average 1.1737451737451738) internal successors, (304), 265 states have internal predecessors, (304), 99 states have call successors, (99), 33 states have call predecessors, (99), 38 states have return successors, (112), 98 states have call predecessors, (112), 97 states have call successors, (112) [2021-12-28 03:22:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 515 transitions. [2021-12-28 03:22:37,241 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 515 transitions. Word has length 202 [2021-12-28 03:22:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:37,242 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 515 transitions. [2021-12-28 03:22:37,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-28 03:22:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 515 transitions. [2021-12-28 03:22:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-28 03:22:37,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:37,244 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:37,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:37,459 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,SelfDestructingSolverStorable11 [2021-12-28 03:22:37,460 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:37,461 INFO L85 PathProgramCache]: Analyzing trace with hash -89821291, now seen corresponding path program 1 times [2021-12-28 03:22:37,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:37,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619148618] [2021-12-28 03:22:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:37,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:37,516 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:37,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714401652] [2021-12-28 03:22:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:37,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:37,517 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) [2021-12-28 03:22:37,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:22:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:38,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-28 03:22:38,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:38,384 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1801 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1801))) (exists ((v_ArrVal_1802 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1802))))) is different from true [2021-12-28 03:22:38,612 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-28 03:22:38,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-28 03:22:38,625 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-28 03:22:38,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-28 03:22:38,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-28 03:22:38,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-28 03:22:38,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-28 03:22:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:22:38,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:22:51,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:51,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619148618] [2021-12-28 03:22:51,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:51,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714401652] [2021-12-28 03:22:51,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714401652] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:22:51,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:22:51,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-12-28 03:22:51,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702743455] [2021-12-28 03:22:51,421 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:22:51,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:22:51,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:22:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=356, Unknown=22, NotChecked=38, Total=462 [2021-12-28 03:22:51,422 INFO L87 Difference]: Start difference. First operand 397 states and 515 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2021-12-28 03:22:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:52,887 INFO L93 Difference]: Finished difference Result 903 states and 1206 transitions. [2021-12-28 03:22:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-28 03:22:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 209 [2021-12-28 03:22:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:52,890 INFO L225 Difference]: With dead ends: 903 [2021-12-28 03:22:52,890 INFO L226 Difference]: Without dead ends: 541 [2021-12-28 03:22:52,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=106, Invalid=855, Unknown=35, NotChecked=60, Total=1056 [2021-12-28 03:22:52,892 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 142 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 789 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:52,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1699 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1743 Invalid, 0 Unknown, 789 Unchecked, 1.1s Time] [2021-12-28 03:22:52,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-12-28 03:22:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 441. [2021-12-28 03:22:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 295 states have (on average 1.1728813559322033) internal successors, (346), 303 states have internal predecessors, (346), 101 states have call successors, (101), 33 states have call predecessors, (101), 44 states have return successors, (156), 104 states have call predecessors, (156), 99 states have call successors, (156) [2021-12-28 03:22:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 603 transitions. [2021-12-28 03:22:52,911 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 603 transitions. Word has length 209 [2021-12-28 03:22:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:52,911 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 603 transitions. [2021-12-28 03:22:52,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2021-12-28 03:22:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 603 transitions. [2021-12-28 03:22:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-28 03:22:52,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:52,913 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:52,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:53,132 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,SelfDestructingSolverStorable12 [2021-12-28 03:22:53,133 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:53,133 INFO L85 PathProgramCache]: Analyzing trace with hash -297471985, now seen corresponding path program 1 times [2021-12-28 03:22:53,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:53,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028895625] [2021-12-28 03:22:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:53,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:53,180 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:53,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275487007] [2021-12-28 03:22:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:53,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:53,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:53,197 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) [2021-12-28 03:22:53,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:22:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:54,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-28 03:22:54,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:54,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:22:54,664 INFO L387 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 74 treesize of output 56 [2021-12-28 03:22:55,174 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 03:22:55,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 03:22:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 03:22:55,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:22:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-28 03:22:56,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:56,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028895625] [2021-12-28 03:22:56,249 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:56,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275487007] [2021-12-28 03:22:56,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275487007] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:22:56,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:22:56,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 30 [2021-12-28 03:22:56,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120268628] [2021-12-28 03:22:56,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:22:56,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-28 03:22:56,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-28 03:22:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2021-12-28 03:22:56,252 INFO L87 Difference]: Start difference. First operand 441 states and 603 transitions. Second operand has 30 states, 27 states have (on average 5.444444444444445) internal successors, (147), 28 states have internal predecessors, (147), 9 states have call successors, (45), 2 states have call predecessors, (45), 9 states have return successors, (43), 8 states have call predecessors, (43), 9 states have call successors, (43) [2021-12-28 03:22:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:57,325 INFO L93 Difference]: Finished difference Result 931 states and 1278 transitions. [2021-12-28 03:22:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-28 03:22:57,325 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.444444444444445) internal successors, (147), 28 states have internal predecessors, (147), 9 states have call successors, (45), 2 states have call predecessors, (45), 9 states have return successors, (43), 8 states have call predecessors, (43), 9 states have call successors, (43) Word has length 209 [2021-12-28 03:22:57,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:57,327 INFO L225 Difference]: With dead ends: 931 [2021-12-28 03:22:57,328 INFO L226 Difference]: Without dead ends: 517 [2021-12-28 03:22:57,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-12-28 03:22:57,330 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 178 mSDsluCounter, 3197 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:57,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 3394 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:22:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-12-28 03:22:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 461. [2021-12-28 03:22:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 315 states have (on average 1.180952380952381) internal successors, (372), 321 states have internal predecessors, (372), 101 states have call successors, (101), 33 states have call predecessors, (101), 44 states have return successors, (156), 106 states have call predecessors, (156), 99 states have call successors, (156) [2021-12-28 03:22:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 629 transitions. [2021-12-28 03:22:57,349 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 629 transitions. Word has length 209 [2021-12-28 03:22:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:57,349 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 629 transitions. [2021-12-28 03:22:57,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.444444444444445) internal successors, (147), 28 states have internal predecessors, (147), 9 states have call successors, (45), 2 states have call predecessors, (45), 9 states have return successors, (43), 8 states have call predecessors, (43), 9 states have call successors, (43) [2021-12-28 03:22:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 629 transitions. [2021-12-28 03:22:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-28 03:22:57,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:57,351 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:57,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:57,576 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,SelfDestructingSolverStorable13 [2021-12-28 03:22:57,576 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 707191032, now seen corresponding path program 1 times [2021-12-28 03:22:57,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:57,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286765651] [2021-12-28 03:22:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:57,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:57,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:57,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736451746] [2021-12-28 03:22:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:57,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:57,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:57,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:22:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:58,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-28 03:22:58,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 03:22:58,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:58,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:58,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286765651] [2021-12-28 03:22:58,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:58,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736451746] [2021-12-28 03:22:58,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736451746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:58,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:58,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:22:58,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15200461] [2021-12-28 03:22:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:58,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:22:58,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:22:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:22:58,488 INFO L87 Difference]: Start difference. First operand 461 states and 629 transitions. Second operand has 10 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:22:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:58,599 INFO L93 Difference]: Finished difference Result 700 states and 947 transitions. [2021-12-28 03:22:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:22:58,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 209 [2021-12-28 03:22:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:58,602 INFO L225 Difference]: With dead ends: 700 [2021-12-28 03:22:58,602 INFO L226 Difference]: Without dead ends: 475 [2021-12-28 03:22:58,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:22:58,603 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 4 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:58,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2019 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:22:58,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-12-28 03:22:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 468. [2021-12-28 03:22:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 320 states have (on average 1.178125) internal successors, (377), 327 states have internal predecessors, (377), 101 states have call successors, (101), 33 states have call predecessors, (101), 46 states have return successors, (158), 107 states have call predecessors, (158), 99 states have call successors, (158) [2021-12-28 03:22:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 636 transitions. [2021-12-28 03:22:58,636 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 636 transitions. Word has length 209 [2021-12-28 03:22:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:58,637 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 636 transitions. [2021-12-28 03:22:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:22:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 636 transitions. [2021-12-28 03:22:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-28 03:22:58,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:58,649 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:58,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:58,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:22:58,870 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash -268648195, now seen corresponding path program 1 times [2021-12-28 03:22:58,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:58,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526570777] [2021-12-28 03:22:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:58,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:58,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:58,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750370811] [2021-12-28 03:22:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:58,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:58,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:58,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:58,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:22:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:59,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:22:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-28 03:22:59,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:59,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:59,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526570777] [2021-12-28 03:22:59,832 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:59,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750370811] [2021-12-28 03:22:59,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750370811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:59,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:59,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:22:59,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202337024] [2021-12-28 03:22:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:59,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:22:59,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:22:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:59,833 INFO L87 Difference]: Start difference. First operand 468 states and 636 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:23:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:00,021 INFO L93 Difference]: Finished difference Result 907 states and 1282 transitions. [2021-12-28 03:23:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:23:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 211 [2021-12-28 03:23:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:00,024 INFO L225 Difference]: With dead ends: 907 [2021-12-28 03:23:00,024 INFO L226 Difference]: Without dead ends: 478 [2021-12-28 03:23:00,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:23:00,026 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:00,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 895 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:23:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-12-28 03:23:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 470. [2021-12-28 03:23:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 322 states have (on average 1.1770186335403727) internal successors, (379), 329 states have internal predecessors, (379), 101 states have call successors, (101), 33 states have call predecessors, (101), 46 states have return successors, (158), 107 states have call predecessors, (158), 99 states have call successors, (158) [2021-12-28 03:23:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 638 transitions. [2021-12-28 03:23:00,046 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 638 transitions. Word has length 211 [2021-12-28 03:23:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:00,046 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 638 transitions. [2021-12-28 03:23:00,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:23:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 638 transitions. [2021-12-28 03:23:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-28 03:23:00,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:00,048 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:23:00,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-28 03:23:00,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:23:00,267 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1733238075, now seen corresponding path program 1 times [2021-12-28 03:23:00,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87094702] [2021-12-28 03:23:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:00,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:00,312 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:23:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187336655] [2021-12-28 03:23:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:00,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:23:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:00,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:23:00,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 03:23:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:00,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 136 conjunts are in the unsatisfiable core [2021-12-28 03:23:00,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:14,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:23:14,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:23:14,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7