./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_s_sift_either_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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:42:13,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:42:13,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:42:13,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:42:13,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:42:13,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:42:13,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:42:13,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:42:13,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:42:13,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:42:13,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:42:13,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:42:13,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:42:13,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:42:13,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:42:13,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:42:13,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:42:13,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:42:13,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:42:13,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:42:13,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:42:13,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:42:13,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:42:13,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:42:13,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:42:13,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:42:13,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:42:13,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:42:13,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:42:13,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:42:13,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:42:13,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:42:13,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:42:13,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:42:13,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:42:13,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:42:13,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:42:13,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:42:13,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:42:13,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:42:13,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:42:13,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:42:13,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:42:13,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:42:13,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:42:13,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:42:13,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:42:13,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:42:13,701 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:42:13,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:42:13,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:42:13,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:42:13,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:42:13,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:42:13,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:42:13,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:42:13,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:42:13,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:42:13,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:42:13,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:42:13,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:42:13,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:42:13,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:42:13,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:42:13,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:42:13,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:42:13,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:42:13,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:42:13,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:42:13,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:42:13,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:42:13,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-03 23:42:13,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:42:13,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:42:13,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:42:13,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:42:13,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:42:13,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-03 23:42:14,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84be0dfec/d6d19c64094b4e9a8f2f9772a020eb39/FLAG4c5b458fb [2021-11-03 23:42:14,729 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:42:14,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-03 23:42:14,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84be0dfec/d6d19c64094b4e9a8f2f9772a020eb39/FLAG4c5b458fb [2021-11-03 23:42:14,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84be0dfec/d6d19c64094b4e9a8f2f9772a020eb39 [2021-11-03 23:42:14,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:42:14,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:42:14,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:42:14,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:42:14,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:42:14,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:42:14" (1/1) ... [2021-11-03 23:42:14,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c235a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:14, skipping insertion in model container [2021-11-03 23:42:14,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:42:14" (1/1) ... [2021-11-03 23:42:14,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:42:14,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:42:15,228 WARN L228 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_s_sift_either_harness.i[4506,4519] [2021-11-03 23:42:15,234 WARN L228 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_s_sift_either_harness.i[4566,4579] [2021-11-03 23:42:15,250 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:42:15,254 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:42:16,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,050 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,051 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,051 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:42:16,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:42:16,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:42:16,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:42:16,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:42:16,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:42:16,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:42:16,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:42:16,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:42:16,343 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:42:16,483 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:42:16,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,578 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:42:16,635 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:42:16,654 WARN L228 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_s_sift_either_harness.i[4506,4519] [2021-11-03 23:42:16,655 WARN L228 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_s_sift_either_harness.i[4566,4579] [2021-11-03 23:42:16,656 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:42:16,656 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:42:16,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:42:16,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:42:16,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:42:16,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:42:16,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:42:16,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:42:16,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:42:16,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:42:16,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:42:16,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:42:16,763 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:42:16,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,785 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,824 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,825 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,828 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:16,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:42:17,017 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:42:17,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17 WrapperNode [2021-11-03 23:42:17,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:42:17,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:42:17,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:42:17,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:42:17,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:42:17,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:42:17,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:42:17,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:42:17,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:42:17,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:42:17,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:42:17,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:42:17,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (1/1) ... [2021-11-03 23:42:17,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:42:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:42:17,873 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) [2021-11-03 23:42:17,886 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 [2021-11-03 23:42:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:42:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:42:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:42:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:42:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:42:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:42:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:42:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:42:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:42:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:42:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:42:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:42:24,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:42:24,018 INFO L299 CfgBuilder]: Removed 1637 assume(true) statements. [2021-11-03 23:42:24,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:42:24 BoogieIcfgContainer [2021-11-03 23:42:24,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:42:24,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:42:24,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:42:24,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:42:24,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:42:14" (1/3) ... [2021-11-03 23:42:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faa8d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:42:24, skipping insertion in model container [2021-11-03 23:42:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:17" (2/3) ... [2021-11-03 23:42:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faa8d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:42:24, skipping insertion in model container [2021-11-03 23:42:24,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:42:24" (3/3) ... [2021-11-03 23:42:24,034 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-03 23:42:24,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:42:24,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-03 23:42:24,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:42:24,103 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 [2021-11-03 23:42:24,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-03 23:42:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 2061 states, 2006 states have (on average 1.4272183449651046) internal successors, (2863), 2060 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 23:42:24,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:24,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:24,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:42:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -771143003, now seen corresponding path program 1 times [2021-11-03 23:42:24,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:24,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195754546] [2021-11-03 23:42:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:24,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:24,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:24,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195754546] [2021-11-03 23:42:24,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195754546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:24,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:24,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:42:24,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849518647] [2021-11-03 23:42:24,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:24,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:42:24,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:42:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:42:24,839 INFO L87 Difference]: Start difference. First operand has 2061 states, 2006 states have (on average 1.4272183449651046) internal successors, (2863), 2060 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:26,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:42:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:34,688 INFO L93 Difference]: Finished difference Result 4116 states and 5719 transitions. [2021-11-03 23:42:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:42:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 23:42:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:34,713 INFO L225 Difference]: With dead ends: 4116 [2021-11-03 23:42:34,713 INFO L226 Difference]: Without dead ends: 2056 [2021-11-03 23:42:34,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:42:34,727 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8762.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9593.59ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:34,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2660 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [0 Valid, 2659 Invalid, 1 Unknown, 0 Unchecked, 9593.59ms Time] [2021-11-03 23:42:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-11-03 23:42:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2056. [2021-11-03 23:42:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.326173826173826) internal successors, (2655), 2055 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2655 transitions. [2021-11-03 23:42:34,853 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2655 transitions. Word has length 41 [2021-11-03 23:42:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:34,853 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2655 transitions. [2021-11-03 23:42:34,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2655 transitions. [2021-11-03 23:42:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 23:42:34,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:34,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:34,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:42:34,861 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:42:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 890029669, now seen corresponding path program 1 times [2021-11-03 23:42:34,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:34,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891440570] [2021-11-03 23:42:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:34,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:35,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:35,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891440570] [2021-11-03 23:42:35,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891440570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:35,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:35,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:42:35,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675621065] [2021-11-03 23:42:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:35,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:42:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:42:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:42:35,159 INFO L87 Difference]: Start difference. First operand 2056 states and 2655 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:37,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:42:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:51,043 INFO L93 Difference]: Finished difference Result 4034 states and 5208 transitions. [2021-11-03 23:42:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:42:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 23:42:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:51,051 INFO L225 Difference]: With dead ends: 4034 [2021-11-03 23:42:51,051 INFO L226 Difference]: Without dead ends: 2058 [2021-11-03 23:42:51,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:42:51,055 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2882 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 5053 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14474.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2882 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.02ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5053 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15535.67ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:51,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2882 Valid, 0 Invalid, 5059 Unknown, 0 Unchecked, 42.02ms Time], IncrementalHoareTripleChecker [5 Valid, 5053 Invalid, 1 Unknown, 0 Unchecked, 15535.67ms Time] [2021-11-03 23:42:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2021-11-03 23:42:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2021-11-03 23:42:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.3246753246753247) internal successors, (2652), 2055 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2652 transitions. [2021-11-03 23:42:51,101 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2652 transitions. Word has length 41 [2021-11-03 23:42:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:51,101 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2652 transitions. [2021-11-03 23:42:51,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2652 transitions. [2021-11-03 23:42:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:42:51,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:51,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:51,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:42:51,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:42:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1055647481, now seen corresponding path program 1 times [2021-11-03 23:42:51,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:51,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085888628] [2021-11-03 23:42:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:51,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:51,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:51,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085888628] [2021-11-03 23:42:51,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085888628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:51,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:51,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:42:51,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572845409] [2021-11-03 23:42:51,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:51,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:42:51,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:42:51,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:42:51,419 INFO L87 Difference]: Start difference. First operand 2056 states and 2652 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:53,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:43:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:11,226 INFO L93 Difference]: Finished difference Result 4157 states and 5359 transitions. [2021-11-03 23:43:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:43:11,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:43:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:11,235 INFO L225 Difference]: With dead ends: 4157 [2021-11-03 23:43:11,235 INFO L226 Difference]: Without dead ends: 2149 [2021-11-03 23:43:11,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 114.94ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:43:11,240 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3201 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 7638 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18155.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.53ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19467.71ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:11,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 0 Invalid, 7656 Unknown, 0 Unchecked, 36.53ms Time], IncrementalHoareTripleChecker [17 Valid, 7638 Invalid, 1 Unknown, 0 Unchecked, 19467.71ms Time] [2021-11-03 23:43:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-03 23:43:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2056. [2021-11-03 23:43:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.3231768231768233) internal successors, (2649), 2055 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2649 transitions. [2021-11-03 23:43:11,279 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2649 transitions. Word has length 49 [2021-11-03 23:43:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:11,280 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2649 transitions. [2021-11-03 23:43:11,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2649 transitions. [2021-11-03 23:43:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 23:43:11,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:11,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:11,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:43:11,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:43:11,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1757033039, now seen corresponding path program 1 times [2021-11-03 23:43:11,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:11,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812059924] [2021-11-03 23:43:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:11,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:11,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:11,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691276474] [2021-11-03 23:43:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:11,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:11,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:11,372 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) [2021-11-03 23:43:11,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:43:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:12,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 23:43:12,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:12,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:12,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:12,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812059924] [2021-11-03 23:43:12,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:12,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691276474] [2021-11-03 23:43:12,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691276474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:12,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:12,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:43:12,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563188972] [2021-11-03 23:43:12,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:12,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:43:12,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:43:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:43:12,392 INFO L87 Difference]: Start difference. First operand 2056 states and 2649 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:14,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:43:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:27,806 INFO L93 Difference]: Finished difference Result 2179 states and 2815 transitions. [2021-11-03 23:43:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:43:27,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-03 23:43:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:27,813 INFO L225 Difference]: With dead ends: 2179 [2021-11-03 23:43:27,813 INFO L226 Difference]: Without dead ends: 2057 [2021-11-03 23:43:27,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:43:27,815 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 5295 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13982.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15207.55ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:27,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5296 Unknown, 0 Unchecked, 24.44ms Time], IncrementalHoareTripleChecker [0 Valid, 5295 Invalid, 1 Unknown, 0 Unchecked, 15207.55ms Time] [2021-11-03 23:43:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-03 23:43:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2057. [2021-11-03 23:43:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3230154767848228) internal successors, (2650), 2056 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2650 transitions. [2021-11-03 23:43:27,855 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2650 transitions. Word has length 65 [2021-11-03 23:43:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:27,856 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2650 transitions. [2021-11-03 23:43:27,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:27,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2650 transitions. [2021-11-03 23:43:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 23:43:27,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:27,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:27,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 23:43:28,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:28,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:43:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash 61465685, now seen corresponding path program 1 times [2021-11-03 23:43:28,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:28,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275751683] [2021-11-03 23:43:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:28,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:28,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:28,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640118396] [2021-11-03 23:43:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:28,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:28,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:28,155 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) [2021-11-03 23:43:28,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:43:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:28,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:43:28,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:29,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:29,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:29,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275751683] [2021-11-03 23:43:29,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:29,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640118396] [2021-11-03 23:43:29,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640118396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:29,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:29,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:43:29,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063917168] [2021-11-03 23:43:29,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:29,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:43:29,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:43:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:43:29,307 INFO L87 Difference]: Start difference. First operand 2057 states and 2650 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:31,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:43:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:51,608 INFO L93 Difference]: Finished difference Result 5594 states and 7164 transitions. [2021-11-03 23:43:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:43:51,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 23:43:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:51,619 INFO L225 Difference]: With dead ends: 5594 [2021-11-03 23:43:51,619 INFO L226 Difference]: Without dead ends: 3616 [2021-11-03 23:43:51,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 194.90ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:43:51,623 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11627 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 7466 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19985.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11627 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.31ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21736.96ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:51,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11627 Valid, 0 Invalid, 7484 Unknown, 0 Unchecked, 82.31ms Time], IncrementalHoareTripleChecker [17 Valid, 7466 Invalid, 1 Unknown, 0 Unchecked, 21736.96ms Time] [2021-11-03 23:43:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2021-11-03 23:43:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2057. [2021-11-03 23:43:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3215177234148776) internal successors, (2647), 2056 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2647 transitions. [2021-11-03 23:43:51,679 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2647 transitions. Word has length 73 [2021-11-03 23:43:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:51,680 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2647 transitions. [2021-11-03 23:43:51,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2647 transitions. [2021-11-03 23:43:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 23:43:51,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:51,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:51,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-03 23:43:51,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:51,900 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:43:51,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1420657039, now seen corresponding path program 1 times [2021-11-03 23:43:51,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:51,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123885007] [2021-11-03 23:43:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:51,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:52,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:52,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921107432] [2021-11-03 23:43:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:52,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:52,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:52,025 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) [2021-11-03 23:43:52,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:43:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:52,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 23:43:52,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:53,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:53,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:53,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123885007] [2021-11-03 23:43:53,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:53,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921107432] [2021-11-03 23:43:53,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921107432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:53,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:53,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:43:53,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635439771] [2021-11-03 23:43:53,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:53,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:43:53,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:43:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:43:53,235 INFO L87 Difference]: Start difference. First operand 2057 states and 2647 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:55,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:44:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:44:27,618 INFO L93 Difference]: Finished difference Result 8487 states and 10773 transitions. [2021-11-03 23:44:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:44:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-03 23:44:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:44:27,640 INFO L225 Difference]: With dead ends: 8487 [2021-11-03 23:44:27,640 INFO L226 Difference]: Without dead ends: 6493 [2021-11-03 23:44:27,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 188.68ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:44:27,645 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14361 mSDsluCounter, 8354 mSDsCounter, 0 mSdLazyCounter, 11698 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30629.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14361 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.14ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 11698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33554.95ms IncrementalHoareTripleChecker+Time [2021-11-03 23:44:27,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14361 Valid, 0 Invalid, 11755 Unknown, 0 Unchecked, 101.14ms Time], IncrementalHoareTripleChecker [56 Valid, 11698 Invalid, 1 Unknown, 0 Unchecked, 33554.95ms Time] [2021-11-03 23:44:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2021-11-03 23:44:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 2057. [2021-11-03 23:44:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3200199700449327) internal successors, (2644), 2056 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2644 transitions. [2021-11-03 23:44:27,721 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2644 transitions. Word has length 97 [2021-11-03 23:44:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:44:27,721 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2644 transitions. [2021-11-03 23:44:27,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2644 transitions. [2021-11-03 23:44:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 23:44:27,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:44:27,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:44:27,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:44:27,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:27,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:44:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:44:27,943 INFO L85 PathProgramCache]: Analyzing trace with hash 883061289, now seen corresponding path program 1 times [2021-11-03 23:44:27,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:44:27,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811463260] [2021-11-03 23:44:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:27,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:44:28,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:44:28,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426210766] [2021-11-03 23:44:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:28,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:44:28,022 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) [2021-11-03 23:44:28,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:44:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:44:28,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:44:28,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:44:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:44:29,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:44:29,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:44:29,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811463260] [2021-11-03 23:44:29,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:44:29,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426210766] [2021-11-03 23:44:29,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426210766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:44:29,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:44:29,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:44:29,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608592014] [2021-11-03 23:44:29,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:44:29,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:44:29,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:44:29,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:44:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:44:29,502 INFO L87 Difference]: Start difference. First operand 2057 states and 2644 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:31,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:44:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:44:45,201 INFO L93 Difference]: Finished difference Result 4450 states and 5708 transitions. [2021-11-03 23:44:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:44:45,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 23:44:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:44:45,208 INFO L225 Difference]: With dead ends: 4450 [2021-11-03 23:44:45,208 INFO L226 Difference]: Without dead ends: 2589 [2021-11-03 23:44:45,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 149.64ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:44:45,211 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10889 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 4891 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13959.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10889 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.62ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15302.68ms IncrementalHoareTripleChecker+Time [2021-11-03 23:44:45,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10889 Valid, 0 Invalid, 4911 Unknown, 0 Unchecked, 41.62ms Time], IncrementalHoareTripleChecker [19 Valid, 4891 Invalid, 1 Unknown, 0 Unchecked, 15302.68ms Time] [2021-11-03 23:44:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-11-03 23:44:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2057. [2021-11-03 23:44:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3185222166749875) internal successors, (2641), 2056 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2641 transitions. [2021-11-03 23:44:45,268 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2641 transitions. Word has length 113 [2021-11-03 23:44:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:44:45,269 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2641 transitions. [2021-11-03 23:44:45,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2641 transitions. [2021-11-03 23:44:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 23:44:45,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:44:45,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:44:45,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:44:45,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:45,495 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:44:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:44:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1442612120, now seen corresponding path program 1 times [2021-11-03 23:44:45,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:44:45,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000099930] [2021-11-03 23:44:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:45,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:44:45,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:44:45,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892578884] [2021-11-03 23:44:45,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:45,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:45,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:44:45,595 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) [2021-11-03 23:44:45,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:44:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:44:46,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 23:44:46,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:44:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:44:46,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:44:46,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:44:46,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000099930] [2021-11-03 23:44:46,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:44:46,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892578884] [2021-11-03 23:44:46,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892578884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:44:46,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:44:46,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:44:46,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142667344] [2021-11-03 23:44:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:44:46,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:44:46,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:44:46,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:44:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:44:46,990 INFO L87 Difference]: Start difference. First operand 2057 states and 2641 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:49,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:45:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:10,464 INFO L93 Difference]: Finished difference Result 5356 states and 6827 transitions. [2021-11-03 23:45:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:45:10,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-03 23:45:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:10,473 INFO L225 Difference]: With dead ends: 5356 [2021-11-03 23:45:10,473 INFO L226 Difference]: Without dead ends: 3463 [2021-11-03 23:45:10,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 196.42ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:45:10,476 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10912 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 7411 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20829.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10912 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.20ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 7411 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22924.54ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:10,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10912 Valid, 0 Invalid, 7456 Unknown, 0 Unchecked, 60.20ms Time], IncrementalHoareTripleChecker [44 Valid, 7411 Invalid, 1 Unknown, 0 Unchecked, 22924.54ms Time] [2021-11-03 23:45:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2021-11-03 23:45:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 2057. [2021-11-03 23:45:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3170244633050425) internal successors, (2638), 2056 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2638 transitions. [2021-11-03 23:45:10,540 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2638 transitions. Word has length 117 [2021-11-03 23:45:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:10,541 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2638 transitions. [2021-11-03 23:45:10,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2638 transitions. [2021-11-03 23:45:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-03 23:45:10,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:10,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:45:10,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:45:10,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:10,759 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:45:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1184403276, now seen corresponding path program 1 times [2021-11-03 23:45:10,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:10,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910509215] [2021-11-03 23:45:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:10,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:10,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:45:10,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606922676] [2021-11-03 23:45:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:10,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:10,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:10,853 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) [2021-11-03 23:45:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:45:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:11,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 23:45:11,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:45:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:12,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:45:12,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:12,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910509215] [2021-11-03 23:45:12,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:45:12,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606922676] [2021-11-03 23:45:12,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606922676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:12,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:12,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:45:12,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617257671] [2021-11-03 23:45:12,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:12,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:45:12,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:45:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:45:12,451 INFO L87 Difference]: Start difference. First operand 2057 states and 2638 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:14,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:45:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:36,237 INFO L93 Difference]: Finished difference Result 5936 states and 7570 transitions. [2021-11-03 23:45:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 23:45:36,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-03 23:45:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:36,250 INFO L225 Difference]: With dead ends: 5936 [2021-11-03 23:45:36,250 INFO L226 Difference]: Without dead ends: 4074 [2021-11-03 23:45:36,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 332.61ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-03 23:45:36,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19459 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 7075 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20951.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19459 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.10ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 7075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23053.78ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:36,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19459 Valid, 0 Invalid, 7127 Unknown, 0 Unchecked, 73.10ms Time], IncrementalHoareTripleChecker [51 Valid, 7075 Invalid, 1 Unknown, 0 Unchecked, 23053.78ms Time] [2021-11-03 23:45:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2021-11-03 23:45:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 2057. [2021-11-03 23:45:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3155267099350973) internal successors, (2635), 2056 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2635 transitions. [2021-11-03 23:45:36,348 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2635 transitions. Word has length 125 [2021-11-03 23:45:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:36,348 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2635 transitions. [2021-11-03 23:45:36,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2635 transitions. [2021-11-03 23:45:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 23:45:36,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:36,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:45:36,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:45:36,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:36,564 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:45:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1283216539, now seen corresponding path program 1 times [2021-11-03 23:45:36,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:36,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114425650] [2021-11-03 23:45:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:36,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:36,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:45:36,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496771782] [2021-11-03 23:45:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:36,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:36,654 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) [2021-11-03 23:45:36,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 23:45:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:37,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 23:45:37,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:45:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:38,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:45:38,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:38,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114425650] [2021-11-03 23:45:38,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:45:38,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496771782] [2021-11-03 23:45:38,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496771782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:38,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:38,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:45:38,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434834839] [2021-11-03 23:45:38,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:38,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:45:38,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:45:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:45:38,163 INFO L87 Difference]: Start difference. First operand 2057 states and 2635 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:40,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:46:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:07,924 INFO L93 Difference]: Finished difference Result 5964 states and 7602 transitions. [2021-11-03 23:46:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 23:46:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-03 23:46:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:07,936 INFO L225 Difference]: With dead ends: 5964 [2021-11-03 23:46:07,936 INFO L226 Difference]: Without dead ends: 4086 [2021-11-03 23:46:07,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 464.92ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-03 23:46:07,942 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19893 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 9263 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26047.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19893 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.97ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28851.07ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:07,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19893 Valid, 0 Invalid, 9387 Unknown, 0 Unchecked, 90.97ms Time], IncrementalHoareTripleChecker [123 Valid, 9263 Invalid, 1 Unknown, 0 Unchecked, 28851.07ms Time] [2021-11-03 23:46:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4086 states. [2021-11-03 23:46:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4086 to 2057. [2021-11-03 23:46:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3140289565651522) internal successors, (2632), 2056 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2632 transitions. [2021-11-03 23:46:08,012 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2632 transitions. Word has length 137 [2021-11-03 23:46:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:08,012 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2632 transitions. [2021-11-03 23:46:08,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2632 transitions. [2021-11-03 23:46:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-03 23:46:08,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:08,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:46:08,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:08,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:08,216 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:46:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -561648695, now seen corresponding path program 1 times [2021-11-03 23:46:08,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:08,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262038653] [2021-11-03 23:46:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:08,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:08,287 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:08,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232457432] [2021-11-03 23:46:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:08,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:08,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:08,292 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) [2021-11-03 23:46:08,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 23:46:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:09,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:46:09,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:09,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:09,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:09,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262038653] [2021-11-03 23:46:09,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:09,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232457432] [2021-11-03 23:46:09,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232457432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:09,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:09,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:46:09,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217321385] [2021-11-03 23:46:09,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:09,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:46:09,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:09,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:46:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:46:09,945 INFO L87 Difference]: Start difference. First operand 2057 states and 2632 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:11,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:46:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:36,813 INFO L93 Difference]: Finished difference Result 5844 states and 7469 transitions. [2021-11-03 23:46:36,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:46:36,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-03 23:46:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:36,822 INFO L225 Difference]: With dead ends: 5844 [2021-11-03 23:46:36,822 INFO L226 Difference]: Without dead ends: 3992 [2021-11-03 23:46:36,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 266.35ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:46:36,826 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15132 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 8190 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23516.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.50ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 8190 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26162.52ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:36,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15132 Valid, 0 Invalid, 8230 Unknown, 0 Unchecked, 71.50ms Time], IncrementalHoareTripleChecker [39 Valid, 8190 Invalid, 1 Unknown, 0 Unchecked, 26162.52ms Time] [2021-11-03 23:46:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2021-11-03 23:46:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 2057. [2021-11-03 23:46:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3130304543185223) internal successors, (2630), 2056 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2630 transitions. [2021-11-03 23:46:36,935 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2630 transitions. Word has length 145 [2021-11-03 23:46:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:36,936 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2630 transitions. [2021-11-03 23:46:36,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2630 transitions. [2021-11-03 23:46:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-03 23:46:36,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:36,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:46:36,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:37,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-03 23:46:37,149 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:46:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1953947592, now seen corresponding path program 1 times [2021-11-03 23:46:37,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:37,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414319007] [2021-11-03 23:46:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:37,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:37,222 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:37,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088061175] [2021-11-03 23:46:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:37,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:37,224 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) [2021-11-03 23:46:37,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 23:46:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 23:46:37,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:38,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:38,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:38,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414319007] [2021-11-03 23:46:38,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:38,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088061175] [2021-11-03 23:46:38,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088061175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:38,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:38,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:46:38,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417512961] [2021-11-03 23:46:38,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:38,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:46:38,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:46:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:46:38,899 INFO L87 Difference]: Start difference. First operand 2057 states and 2630 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:40,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:16,831 INFO L93 Difference]: Finished difference Result 6750 states and 8586 transitions. [2021-11-03 23:47:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 23:47:16,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-03 23:47:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:16,839 INFO L225 Difference]: With dead ends: 6750 [2021-11-03 23:47:16,839 INFO L226 Difference]: Without dead ends: 4898 [2021-11-03 23:47:16,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 351.10ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-03 23:47:16,841 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13901 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 12081 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33098.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13901 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.52ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 12081 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36978.65ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:16,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13901 Valid, 0 Invalid, 12135 Unknown, 0 Unchecked, 100.52ms Time], IncrementalHoareTripleChecker [53 Valid, 12081 Invalid, 1 Unknown, 0 Unchecked, 36978.65ms Time] [2021-11-03 23:47:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-11-03 23:47:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2057. [2021-11-03 23:47:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.311033449825262) internal successors, (2626), 2056 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2626 transitions. [2021-11-03 23:47:16,910 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2626 transitions. Word has length 149 [2021-11-03 23:47:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:16,910 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2626 transitions. [2021-11-03 23:47:16,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:16,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2626 transitions. [2021-11-03 23:47:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-03 23:47:16,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:16,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:16,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-03 23:47:17,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:17,125 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:47:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1844158272, now seen corresponding path program 1 times [2021-11-03 23:47:17,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:17,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073456064] [2021-11-03 23:47:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:17,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:17,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:17,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501988508] [2021-11-03 23:47:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:17,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:17,198 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) [2021-11-03 23:47:17,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 23:47:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:17,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 23:47:17,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:47:18,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:47:18,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:47:18,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073456064] [2021-11-03 23:47:18,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:47:18,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501988508] [2021-11-03 23:47:18,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501988508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:47:18,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:47:18,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:47:18,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356606804] [2021-11-03 23:47:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:47:18,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:47:18,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:47:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:47:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:47:18,843 INFO L87 Difference]: Start difference. First operand 2057 states and 2626 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:20,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:46,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:46,874 INFO L93 Difference]: Finished difference Result 3396 states and 4344 transitions. [2021-11-03 23:47:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:47:46,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-03 23:47:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:46,878 INFO L225 Difference]: With dead ends: 3396 [2021-11-03 23:47:46,879 INFO L226 Difference]: Without dead ends: 2381 [2021-11-03 23:47:46,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 219.68ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:47:46,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7281 mSDsluCounter, 6187 mSDsCounter, 0 mSdLazyCounter, 9671 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24895.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7281 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.52ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 9671 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27502.81ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:46,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7281 Valid, 0 Invalid, 9690 Unknown, 0 Unchecked, 71.52ms Time], IncrementalHoareTripleChecker [18 Valid, 9671 Invalid, 1 Unknown, 0 Unchecked, 27502.81ms Time] [2021-11-03 23:47:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-11-03 23:47:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2057. [2021-11-03 23:47:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.308537194208687) internal successors, (2621), 2056 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2621 transitions. [2021-11-03 23:47:46,955 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2621 transitions. Word has length 150 [2021-11-03 23:47:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:46,955 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2621 transitions. [2021-11-03 23:47:46,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2621 transitions. [2021-11-03 23:47:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-03 23:47:46,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:46,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:46,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-03 23:47:47,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 23:47:47,182 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:47:47,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:47,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1758983980, now seen corresponding path program 1 times [2021-11-03 23:47:47,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:47,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130819681] [2021-11-03 23:47:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:47,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:47,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:47,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942598952] [2021-11-03 23:47:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:47,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:47,249 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) [2021-11-03 23:47:47,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 23:47:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 23:47:47,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:47:49,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:47:49,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:47:49,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130819681] [2021-11-03 23:47:49,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:47:49,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942598952] [2021-11-03 23:47:49,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942598952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:47:49,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:47:49,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:47:49,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890674725] [2021-11-03 23:47:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:47:49,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:47:49,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:47:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:47:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:47:49,055 INFO L87 Difference]: Start difference. First operand 2057 states and 2621 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:51,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:48:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:48:26,858 INFO L93 Difference]: Finished difference Result 7709 states and 9778 transitions. [2021-11-03 23:48:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 23:48:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-03 23:48:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:48:26,868 INFO L225 Difference]: With dead ends: 7709 [2021-11-03 23:48:26,869 INFO L226 Difference]: Without dead ends: 5857 [2021-11-03 23:48:26,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 468.99ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-03 23:48:26,873 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 23631 mSDsluCounter, 6604 mSDsCounter, 0 mSdLazyCounter, 10867 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32336.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23631 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 112.04ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 10867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36574.06ms IncrementalHoareTripleChecker+Time [2021-11-03 23:48:26,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23631 Valid, 0 Invalid, 10968 Unknown, 0 Unchecked, 112.04ms Time], IncrementalHoareTripleChecker [100 Valid, 10867 Invalid, 1 Unknown, 0 Unchecked, 36574.06ms Time] [2021-11-03 23:48:26,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-11-03 23:48:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 2057. [2021-11-03 23:48:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3075386919620569) internal successors, (2619), 2056 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2619 transitions. [2021-11-03 23:48:26,972 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2619 transitions. Word has length 157 [2021-11-03 23:48:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:48:26,973 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2619 transitions. [2021-11-03 23:48:26,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2619 transitions. [2021-11-03 23:48:26,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-03 23:48:26,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:48:26,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:48:27,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 23:48:27,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 23:48:27,212 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:48:27,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:48:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash 748769034, now seen corresponding path program 1 times [2021-11-03 23:48:27,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:48:27,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475390226] [2021-11-03 23:48:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:27,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:48:27,290 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:48:27,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739691615] [2021-11-03 23:48:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:27,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:48:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:48:27,292 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) [2021-11-03 23:48:27,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 23:48:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:48:28,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 3436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:48:28,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:28,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:28,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:28,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475390226] [2021-11-03 23:48:28,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:28,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739691615] [2021-11-03 23:48:28,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739691615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:28,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:28,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:48:28,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107132059] [2021-11-03 23:48:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:28,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:48:28,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:48:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:48:28,370 INFO L87 Difference]: Start difference. First operand 2057 states and 2619 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:31,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:48:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:48:54,388 INFO L93 Difference]: Finished difference Result 4452 states and 5720 transitions. [2021-11-03 23:48:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:48:54,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-03 23:48:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:48:54,394 INFO L225 Difference]: With dead ends: 4452 [2021-11-03 23:48:54,394 INFO L226 Difference]: Without dead ends: 2442 [2021-11-03 23:48:54,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:48:54,397 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 578 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 8158 mSolverCounterSat, 305 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22759.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.04ms SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 8158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25680.27ms IncrementalHoareTripleChecker+Time [2021-11-03 23:48:54,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 0 Invalid, 8464 Unknown, 0 Unchecked, 39.04ms Time], IncrementalHoareTripleChecker [305 Valid, 8158 Invalid, 1 Unknown, 0 Unchecked, 25680.27ms Time] [2021-11-03 23:48:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-03 23:48:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2211. [2021-11-03 23:48:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2157 states have (on average 1.285581826611034) internal successors, (2773), 2210 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2773 transitions. [2021-11-03 23:48:54,487 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2773 transitions. Word has length 166 [2021-11-03 23:48:54,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:48:54,488 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2773 transitions. [2021-11-03 23:48:54,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2773 transitions. [2021-11-03 23:48:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-03 23:48:54,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:48:54,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:48:54,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 23:48:54,703 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,SelfDestructingSolverStorable14 [2021-11-03 23:48:54,704 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:48:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:48:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1857254520, now seen corresponding path program 1 times [2021-11-03 23:48:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:48:54,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635545834] [2021-11-03 23:48:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:54,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:48:54,776 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:48:54,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425880506] [2021-11-03 23:48:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:54,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:48:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:48:54,778 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) [2021-11-03 23:48:54,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 23:48:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:48:55,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:48:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:56,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:56,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:56,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635545834] [2021-11-03 23:48:56,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:56,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425880506] [2021-11-03 23:48:56,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425880506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:56,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:56,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:48:56,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065916898] [2021-11-03 23:48:56,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:56,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:48:56,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:48:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:48:56,290 INFO L87 Difference]: Start difference. First operand 2211 states and 2773 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:58,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:49:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:49:53,897 INFO L93 Difference]: Finished difference Result 6154 states and 7706 transitions. [2021-11-03 23:49:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:49:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-03 23:49:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:49:53,907 INFO L225 Difference]: With dead ends: 6154 [2021-11-03 23:49:53,907 INFO L226 Difference]: Without dead ends: 4016 [2021-11-03 23:49:53,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 344.46ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:49:53,910 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2031 mSDsluCounter, 12248 mSDsCounter, 0 mSdLazyCounter, 19749 mSolverCounterSat, 91 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50495.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.54ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 19749 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56802.13ms IncrementalHoareTripleChecker+Time [2021-11-03 23:49:53,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 0 Invalid, 19841 Unknown, 0 Unchecked, 101.54ms Time], IncrementalHoareTripleChecker [91 Valid, 19749 Invalid, 1 Unknown, 0 Unchecked, 56802.13ms Time] [2021-11-03 23:49:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-11-03 23:49:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 2259. [2021-11-03 23:49:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2205 states have (on average 1.2848072562358277) internal successors, (2833), 2258 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:49:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 2833 transitions. [2021-11-03 23:49:54,023 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 2833 transitions. Word has length 166 [2021-11-03 23:49:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:49:54,023 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 2833 transitions. [2021-11-03 23:49:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:49:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 2833 transitions. [2021-11-03 23:49:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-03 23:49:54,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:49:54,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:49:54,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 23:49:54,237 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,SelfDestructingSolverStorable15 [2021-11-03 23:49:54,238 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:49:54,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:49:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash -76596988, now seen corresponding path program 1 times [2021-11-03 23:49:54,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:49:54,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117814081] [2021-11-03 23:49:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:54,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:49:54,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:49:54,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386670705] [2021-11-03 23:49:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:54,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:49:54,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:49:54,315 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) [2021-11-03 23:49:54,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 23:49:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:49:55,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 3435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:49:55,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:49:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:49:55,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:49:55,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:49:55,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117814081] [2021-11-03 23:49:55,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:49:55,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386670705] [2021-11-03 23:49:55,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386670705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:49:55,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:49:55,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:49:55,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746901327] [2021-11-03 23:49:55,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:49:55,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:49:55,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:49:55,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:49:55,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:49:55,609 INFO L87 Difference]: Start difference. First operand 2259 states and 2833 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:49:58,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:50:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:50:21,195 INFO L93 Difference]: Finished difference Result 4487 states and 5628 transitions. [2021-11-03 23:50:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:50:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-03 23:50:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:50:21,202 INFO L225 Difference]: With dead ends: 4487 [2021-11-03 23:50:21,202 INFO L226 Difference]: Without dead ends: 2307 [2021-11-03 23:50:21,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:50:21,207 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 7859 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22192.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.96ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 7859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25252.82ms IncrementalHoareTripleChecker+Time [2021-11-03 23:50:21,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 7905 Unknown, 0 Unchecked, 34.96ms Time], IncrementalHoareTripleChecker [45 Valid, 7859 Invalid, 1 Unknown, 0 Unchecked, 25252.82ms Time] [2021-11-03 23:50:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2021-11-03 23:50:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2283. [2021-11-03 23:50:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2229 states have (on average 1.281740690892777) internal successors, (2857), 2282 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:50:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2857 transitions. [2021-11-03 23:50:21,305 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2857 transitions. Word has length 166 [2021-11-03 23:50:21,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:50:21,305 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 2857 transitions. [2021-11-03 23:50:21,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:50:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2857 transitions. [2021-11-03 23:50:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-03 23:50:21,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:50:21,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:50:21,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-03 23:50:21,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:50:21,519 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:50:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:50:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -266922624, now seen corresponding path program 1 times [2021-11-03 23:50:21,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:50:21,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875077806] [2021-11-03 23:50:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:50:21,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:50:21,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:50:21,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966650871] [2021-11-03 23:50:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:50:21,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:50:21,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:50:21,592 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) [2021-11-03 23:50:21,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 23:50:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:50:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 23:50:22,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:50:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:50:23,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:50:23,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:50:23,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875077806] [2021-11-03 23:50:23,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:50:23,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966650871] [2021-11-03 23:50:23,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966650871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:50:23,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:50:23,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:50:23,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586456466] [2021-11-03 23:50:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:50:23,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:50:23,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:50:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:50:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:50:23,021 INFO L87 Difference]: Start difference. First operand 2283 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:50:25,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:51:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:51:13,442 INFO L93 Difference]: Finished difference Result 6422 states and 8018 transitions. [2021-11-03 23:51:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:51:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-03 23:51:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:51:13,448 INFO L225 Difference]: With dead ends: 6422 [2021-11-03 23:51:13,448 INFO L226 Difference]: Without dead ends: 4227 [2021-11-03 23:51:13,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.76ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:51:13,452 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2323 mSDsluCounter, 11807 mSDsCounter, 0 mSdLazyCounter, 16838 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43660.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.61ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 16838 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49770.64ms IncrementalHoareTripleChecker+Time [2021-11-03 23:51:13,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2323 Valid, 0 Invalid, 16895 Unknown, 0 Unchecked, 87.61ms Time], IncrementalHoareTripleChecker [56 Valid, 16838 Invalid, 1 Unknown, 0 Unchecked, 49770.64ms Time] [2021-11-03 23:51:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2021-11-03 23:51:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 2379. [2021-11-03 23:51:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2325 states have (on average 1.2804301075268818) internal successors, (2977), 2378 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:51:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 2977 transitions. [2021-11-03 23:51:13,565 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 2977 transitions. Word has length 166 [2021-11-03 23:51:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:51:13,565 INFO L470 AbstractCegarLoop]: Abstraction has 2379 states and 2977 transitions. [2021-11-03 23:51:13,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:51:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 2977 transitions. [2021-11-03 23:51:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-03 23:51:13,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:51:13,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:51:13,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 23:51:13,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-03 23:51:13,791 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:51:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:51:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1151624642, now seen corresponding path program 1 times [2021-11-03 23:51:13,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:51:13,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298650367] [2021-11-03 23:51:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:51:13,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:51:13,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:51:13,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651473853] [2021-11-03 23:51:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:51:13,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:51:13,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:51:13,857 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:51:13,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 23:51:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:51:14,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-03 23:51:14,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:51:15,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-03 23:51:15,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-03 23:51:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:51:16,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:51:16,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:51:16,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298650367] [2021-11-03 23:51:16,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:51:16,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651473853] [2021-11-03 23:51:16,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651473853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:51:16,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:51:16,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 23:51:16,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375204321] [2021-11-03 23:51:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:51:16,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 23:51:16,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:51:16,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 23:51:16,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:51:16,599 INFO L87 Difference]: Start difference. First operand 2379 states and 2977 transitions. Second operand has 13 states, 13 states have (on average 12.76923076923077) internal successors, (166), 13 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:51:19,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:53:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:53:52,573 INFO L93 Difference]: Finished difference Result 6783 states and 8456 transitions. [2021-11-03 23:53:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-03 23:53:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.76923076923077) internal successors, (166), 13 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-03 23:53:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:53:52,580 INFO L225 Difference]: With dead ends: 6783 [2021-11-03 23:53:52,580 INFO L226 Difference]: Without dead ends: 4500 [2021-11-03 23:53:52,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 2980.40ms TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2021-11-03 23:53:52,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6107 mSDsluCounter, 39103 mSDsCounter, 0 mSdLazyCounter, 49799 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135015.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 340.54ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 49799 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152071.84ms IncrementalHoareTripleChecker+Time [2021-11-03 23:53:52,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6107 Valid, 0 Invalid, 49965 Unknown, 0 Unchecked, 340.54ms Time], IncrementalHoareTripleChecker [165 Valid, 49799 Invalid, 1 Unknown, 0 Unchecked, 152071.84ms Time] [2021-11-03 23:53:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-11-03 23:53:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 2462. [2021-11-03 23:53:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2408 states have (on average 1.2799003322259137) internal successors, (3082), 2461 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:53:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3082 transitions. [2021-11-03 23:53:52,683 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3082 transitions. Word has length 166 [2021-11-03 23:53:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:53:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 2462 states and 3082 transitions. [2021-11-03 23:53:52,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.76923076923077) internal successors, (166), 13 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:53:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3082 transitions. [2021-11-03 23:53:52,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-03 23:53:52,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:53:52,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:53:52,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-03 23:53:52,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:53:52,912 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:53:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:53:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash -230088662, now seen corresponding path program 1 times [2021-11-03 23:53:52,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:53:52,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698165949] [2021-11-03 23:53:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:53:52,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:53:52,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:53:52,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704983152] [2021-11-03 23:53:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:53:52,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:53:52,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:53:52,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:53:53,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 23:53:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:53:53,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 3432 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-03 23:53:53,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:53:55,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 23:53:55,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 23:53:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:53:55,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:53:55,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:53:55,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698165949] [2021-11-03 23:53:55,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:53:55,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704983152] [2021-11-03 23:53:55,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704983152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:53:55,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:53:55,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 23:53:55,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893655621] [2021-11-03 23:53:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:53:55,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 23:53:55,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:53:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 23:53:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:53:55,837 INFO L87 Difference]: Start difference. First operand 2462 states and 3082 transitions. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:53:58,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:55:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:55:47,817 INFO L93 Difference]: Finished difference Result 7103 states and 8909 transitions. [2021-11-03 23:55:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-03 23:55:47,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-03 23:55:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:55:47,826 INFO L225 Difference]: With dead ends: 7103 [2021-11-03 23:55:47,826 INFO L226 Difference]: Without dead ends: 4820 [2021-11-03 23:55:47,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 3535.56ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 23:55:47,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6061 mSDsluCounter, 25687 mSDsCounter, 0 mSdLazyCounter, 37181 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96613.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6061 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 240.57ms SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 37181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107713.35ms IncrementalHoareTripleChecker+Time [2021-11-03 23:55:47,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6061 Valid, 0 Invalid, 37434 Unknown, 0 Unchecked, 240.57ms Time], IncrementalHoareTripleChecker [252 Valid, 37181 Invalid, 1 Unknown, 0 Unchecked, 107713.35ms Time] [2021-11-03 23:55:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2021-11-03 23:55:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 4390. [2021-11-03 23:55:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 4336 states have (on average 1.283210332103321) internal successors, (5564), 4389 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:55:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 5564 transitions. [2021-11-03 23:55:48,034 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 5564 transitions. Word has length 170 [2021-11-03 23:55:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:55:48,034 INFO L470 AbstractCegarLoop]: Abstraction has 4390 states and 5564 transitions. [2021-11-03 23:55:48,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:55:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 5564 transitions. [2021-11-03 23:55:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-03 23:55:48,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:55:48,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:55:48,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 23:55:48,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:55:48,252 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 23:55:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:55:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash 133377836, now seen corresponding path program 1 times [2021-11-03 23:55:48,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:55:48,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842345624] [2021-11-03 23:55:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:55:48,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:55:48,318 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:55:48,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537557358] [2021-11-03 23:55:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:55:48,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:55:48,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:55:48,320 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:55:48,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 23:55:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:55:49,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 3427 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 23:55:49,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:55:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:55:49,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:55:49,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:55:49,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842345624] [2021-11-03 23:55:49,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:55:49,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537557358] [2021-11-03 23:55:49,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537557358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:55:49,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:55:49,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:55:49,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146612304] [2021-11-03 23:55:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:55:49,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:55:49,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:55:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:55:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:55:49,649 INFO L87 Difference]: Start difference. First operand 4390 states and 5564 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:55:52,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15