./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:48:07,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:48:07,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:48:07,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:48:07,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:48:07,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:48:07,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:48:07,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:48:07,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:48:07,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:48:07,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:48:07,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:48:07,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:48:07,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:48:07,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:48:07,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:48:07,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:48:07,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:48:07,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:48:07,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:48:07,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:48:07,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:48:07,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:48:07,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:48:07,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:48:07,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:48:07,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:48:07,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:48:07,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:48:07,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:48:07,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:48:07,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:48:07,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:48:07,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:48:07,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:48:07,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:48:07,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:48:07,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:48:07,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:48:07,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:48:07,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:48:07,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:48:07,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:48:07,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:48:07,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:48:07,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:48:07,633 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:48:07,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:48:07,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:48:07,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:48:07,633 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:48:07,634 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:48:07,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:48:07,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:48:07,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:48:07,636 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:48:07,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:48:07,636 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:48:07,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:48:07,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:48:07,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:48:07,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:48:07,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:48:07,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:48:07,638 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:48:07,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:48:07,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:48:07,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:48:07,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:48:07,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:48:07,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:07,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:48:07,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:48:07,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:48:07,642 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:48:07,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:48:07,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:48:07,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:48:07,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:48:07,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-19 15:48:08,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:48:08,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:48:08,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:48:08,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:48:08,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:48:08,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-19 15:48:08,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/9fe82c597/c25d9570861c4de688009bb5dbdffb0f/FLAG67e6c2f40 [2021-11-19 15:48:09,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:48:09,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-19 15:48:09,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/9fe82c597/c25d9570861c4de688009bb5dbdffb0f/FLAG67e6c2f40 [2021-11-19 15:48:09,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/9fe82c597/c25d9570861c4de688009bb5dbdffb0f [2021-11-19 15:48:09,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:48:09,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:48:09,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:09,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:48:09,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:48:09,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:09" (1/1) ... [2021-11-19 15:48:09,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ce3e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:09, skipping insertion in model container [2021-11-19 15:48:09,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:09" (1/1) ... [2021-11-19 15:48:09,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:48:09,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:10,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-19 15:48:10,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-19 15:48:10,105 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:10,111 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:11,082 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,083 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,084 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,085 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,086 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,102 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,105 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,107 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,108 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,109 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,110 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,530 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:11,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:11,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:11,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:11,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:11,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:11,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:11,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:11,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:11,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:11,714 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:11,749 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,756 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,855 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,856 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,856 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,858 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,859 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,860 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,860 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,860 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,861 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,862 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,862 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,866 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,867 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,868 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,868 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,881 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,882 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,904 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,907 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,907 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,945 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,951 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:11,957 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:12,012 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:48:12,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ec0cdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:12, skipping insertion in model container [2021-11-19 15:48:12,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:12,013 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:48:12,015 INFO L158 Benchmark]: Toolchain (without parser) took 2433.57ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 60.1MB in the beginning and 90.2MB in the end (delta: -30.1MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-19 15:48:12,016 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:48:12,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2429.47ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 59.7MB in the beginning and 90.2MB in the end (delta: -30.5MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-11-19 15:48:12,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2429.47ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 59.7MB in the beginning and 90.2MB in the end (delta: -30.5MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:48:14,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:48:14,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:48:14,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:48:14,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:48:14,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:48:14,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:48:14,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:48:14,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:48:14,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:48:14,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:48:14,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:48:14,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:48:14,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:48:14,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:48:14,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:48:14,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:48:14,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:48:14,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:48:14,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:48:14,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:48:14,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:48:14,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:48:14,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:48:14,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:48:14,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:48:14,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:48:14,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:48:14,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:48:14,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:48:14,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:48:14,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:48:14,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:48:14,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:48:14,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:48:14,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:48:14,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:48:14,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:48:14,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:48:14,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:48:14,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:48:14,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:48:14,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:48:14,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:48:14,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:48:14,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:48:14,648 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:48:14,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:48:14,648 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:48:14,649 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:48:14,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:48:14,650 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:48:14,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:48:14,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:48:14,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:48:14,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:48:14,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:48:14,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:48:14,655 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:48:14,655 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:48:14,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:48:14,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:48:14,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:48:14,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:48:14,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:48:14,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:48:14,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:14,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:48:14,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:48:14,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:48:14,658 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:48:14,658 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:48:14,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:48:14,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:48:14,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:48:14,659 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-19 15:48:15,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:48:15,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:48:15,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:48:15,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:48:15,188 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:48:15,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-19 15:48:15,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/ef128bbef/51b28d6ea66949b68faca9423b351c29/FLAGa8d02d0dc [2021-11-19 15:48:16,197 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:48:16,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-19 15:48:16,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/ef128bbef/51b28d6ea66949b68faca9423b351c29/FLAGa8d02d0dc [2021-11-19 15:48:16,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/data/ef128bbef/51b28d6ea66949b68faca9423b351c29 [2021-11-19 15:48:16,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:48:16,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:48:16,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:16,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:48:16,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:48:16,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:16" (1/1) ... [2021-11-19 15:48:16,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fdafaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:16, skipping insertion in model container [2021-11-19 15:48:16,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:48:16" (1/1) ... [2021-11-19 15:48:16,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:48:16,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:17,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-19 15:48:17,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-19 15:48:17,161 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:17,167 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:18,336 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,337 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,337 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,338 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,340 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,356 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,357 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,359 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,360 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,362 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,363 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,364 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,365 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:18,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:18,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:18,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:18,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:18,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:18,850 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:18,851 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:18,852 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:18,852 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:18,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:19,045 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:19,078 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,086 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,186 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,190 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,194 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,201 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,202 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,202 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,203 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,203 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,203 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,205 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,211 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,211 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,212 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,212 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,222 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,223 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,234 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,235 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,256 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,260 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,260 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,269 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:19,325 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:48:19,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:48:19,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-19 15:48:19,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-19 15:48:19,376 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:19,376 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:19,409 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,410 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,410 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,411 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,411 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,439 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,440 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,441 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,442 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,443 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,444 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,445 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,445 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:19,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:19,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:19,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:19,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:19,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:19,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:19,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:19,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:19,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:19,559 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:19,583 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,589 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,638 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,639 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,640 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,640 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,641 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,641 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,642 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,643 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,644 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,645 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,645 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,647 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,647 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,648 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,648 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,649 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,649 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,653 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,654 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,663 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,664 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,665 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,682 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,682 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,683 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,686 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:19,720 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:48:19,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-19 15:48:19,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-19 15:48:19,753 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:48:19,754 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:48:19,796 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,796 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,797 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,797 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,798 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,803 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,804 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,804 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,805 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,806 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,806 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,807 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,807 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:48:19,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:48:19,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:48:19,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:48:19,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:48:19,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:48:19,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:48:19,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:48:19,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:48:19,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:48:19,913 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:48:19,926 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,934 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,955 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,955 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,956 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,956 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,957 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,958 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,961 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,963 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,964 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,965 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,966 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,967 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,975 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,976 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,984 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,990 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:19,997 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:20,002 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:20,003 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:20,005 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:48:20,008 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:48:20,369 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:48:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20 WrapperNode [2021-11-19 15:48:20,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:48:20,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:48:20,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:48:20,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:48:20,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,662 INFO L137 Inliner]: procedures = 719, calls = 1923, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1038 [2021-11-19 15:48:20,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:48:20,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:48:20,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:48:20,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:48:20,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:48:20,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:48:20,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:48:20,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:48:20,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (1/1) ... [2021-11-19 15:48:20,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:48:20,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:48:20,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:48:20,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:48:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-19 15:48:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-19 15:48:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-19 15:48:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-19 15:48:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:48:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-19 15:48:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-19 15:48:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-19 15:48:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-19 15:48:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:48:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:48:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:48:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:48:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 15:48:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-19 15:48:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-19 15:48:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 15:48:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 15:48:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:48:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:48:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-19 15:48:20,957 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-19 15:48:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 15:48:20,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 15:48:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:48:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:48:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:48:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-19 15:48:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-19 15:48:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 15:48:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 15:48:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:48:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:48:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:48:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:48:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:48:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:48:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 15:48:20,959 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 15:48:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 15:48:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 15:48:20,960 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 15:48:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-19 15:48:20,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-19 15:48:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-19 15:48:20,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-19 15:48:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:48:20,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:48:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:48:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:48:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 15:48:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 15:48:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-19 15:48:20,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-19 15:48:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:48:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 15:48:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:48:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:48:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:48:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-19 15:48:20,962 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-19 15:48:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 15:48:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 15:48:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 15:48:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 15:48:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 15:48:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-19 15:48:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-19 15:48:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-19 15:48:20,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-19 15:48:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-19 15:48:20,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-19 15:48:21,350 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:48:21,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:48:27,085 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:48:27,096 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:48:27,097 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-19 15:48:27,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:48:27 BoogieIcfgContainer [2021-11-19 15:48:27,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:48:27,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:48:27,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:48:27,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:48:27,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:48:16" (1/3) ... [2021-11-19 15:48:27,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5949da8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:48:27, skipping insertion in model container [2021-11-19 15:48:27,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:48:20" (2/3) ... [2021-11-19 15:48:27,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5949da8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:48:27, skipping insertion in model container [2021-11-19 15:48:27,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:48:27" (3/3) ... [2021-11-19 15:48:27,107 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-11-19 15:48:27,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:48:27,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 15:48:27,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:48:27,172 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=FINITE_AUTOMATA, 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 [2021-11-19 15:48:27,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 15:48:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 266 states have (on average 1.2744360902255638) internal successors, (339), 271 states have internal predecessors, (339), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-19 15:48:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 15:48:27,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:27,220 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:27,220 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1226682489, now seen corresponding path program 1 times [2021-11-19 15:48:27,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:27,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744377728] [2021-11-19 15:48:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:27,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:27,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:27,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:48:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:28,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:48:28,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 15:48:28,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 15:48:29,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:29,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744377728] [2021-11-19 15:48:29,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744377728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:29,257 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:48:29,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:48:29,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997494965] [2021-11-19 15:48:29,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:29,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:48:29,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:48:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:48:29,316 INFO L87 Difference]: Start difference. First operand has 456 states, 266 states have (on average 1.2744360902255638) internal successors, (339), 271 states have internal predecessors, (339), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:48:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:29,482 INFO L93 Difference]: Finished difference Result 899 states and 1432 transitions. [2021-11-19 15:48:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:48:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-11-19 15:48:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:29,503 INFO L225 Difference]: With dead ends: 899 [2021-11-19 15:48:29,503 INFO L226 Difference]: Without dead ends: 449 [2021-11-19 15:48:29,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:48:29,517 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:48:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-19 15:48:29,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-19 15:48:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 261 states have (on average 1.2375478927203065) internal successors, (323), 264 states have internal predecessors, (323), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-11-19 15:48:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 641 transitions. [2021-11-19 15:48:29,650 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 641 transitions. Word has length 141 [2021-11-19 15:48:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:29,652 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 641 transitions. [2021-11-19 15:48:29,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 15:48:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 641 transitions. [2021-11-19 15:48:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:48:29,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:29,672 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:29,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:29,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:29,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1411277843, now seen corresponding path program 1 times [2021-11-19 15:48:29,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:29,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718372458] [2021-11-19 15:48:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:29,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:29,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:29,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:29,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:48:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:30,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:48:30,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-19 15:48:31,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-19 15:48:32,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:32,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718372458] [2021-11-19 15:48:32,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718372458] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:48:32,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:48:32,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 15:48:32,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347839998] [2021-11-19 15:48:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:32,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:48:32,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:48:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:48:32,350 INFO L87 Difference]: Start difference. First operand 449 states and 641 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 15:48:34,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:35,313 INFO L93 Difference]: Finished difference Result 864 states and 1251 transitions. [2021-11-19 15:48:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:48:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2021-11-19 15:48:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:35,323 INFO L225 Difference]: With dead ends: 864 [2021-11-19 15:48:35,324 INFO L226 Difference]: Without dead ends: 451 [2021-11-19 15:48:35,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:48:35,329 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 36 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:35,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2378 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 15:48:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-19 15:48:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-19 15:48:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 262 states have (on average 1.2366412213740459) internal successors, (324), 266 states have internal predecessors, (324), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (172), 158 states have call predecessors, (172), 158 states have call successors, (172) [2021-11-19 15:48:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 656 transitions. [2021-11-19 15:48:35,378 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 656 transitions. Word has length 156 [2021-11-19 15:48:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:35,378 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 656 transitions. [2021-11-19 15:48:35,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 15:48:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 656 transitions. [2021-11-19 15:48:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-19 15:48:35,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:35,383 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:35,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:35,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:35,595 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1659857565, now seen corresponding path program 1 times [2021-11-19 15:48:35,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:35,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459346765] [2021-11-19 15:48:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:35,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:35,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:35,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:35,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:48:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:48:36,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-19 15:48:37,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-19 15:48:38,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:38,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459346765] [2021-11-19 15:48:38,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459346765] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:48:38,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:48:38,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-19 15:48:38,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992020888] [2021-11-19 15:48:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:38,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:48:38,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:48:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:48:38,683 INFO L87 Difference]: Start difference. First operand 451 states and 656 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:48:41,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:42,693 INFO L93 Difference]: Finished difference Result 887 states and 1324 transitions. [2021-11-19 15:48:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:48:42,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2021-11-19 15:48:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:42,703 INFO L225 Difference]: With dead ends: 887 [2021-11-19 15:48:42,703 INFO L226 Difference]: Without dead ends: 472 [2021-11-19 15:48:42,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:48:42,709 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 87 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:42,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 3442 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 15:48:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-19 15:48:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2021-11-19 15:48:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 282 states have internal predecessors, (346), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-11-19 15:48:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 699 transitions. [2021-11-19 15:48:42,753 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 699 transitions. Word has length 164 [2021-11-19 15:48:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:42,754 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 699 transitions. [2021-11-19 15:48:42,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:48:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 699 transitions. [2021-11-19 15:48:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-19 15:48:42,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:42,758 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:42,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:42,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:42,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:42,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:42,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1958921511, now seen corresponding path program 1 times [2021-11-19 15:48:42,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:42,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68779814] [2021-11-19 15:48:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:42,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:42,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:42,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:48:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:44,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:48:44,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-19 15:48:44,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-19 15:48:45,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:45,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68779814] [2021-11-19 15:48:45,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68779814] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:48:45,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:48:45,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-19 15:48:45,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71810223] [2021-11-19 15:48:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:45,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:48:45,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:45,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:48:45,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:48:45,910 INFO L87 Difference]: Start difference. First operand 470 states and 699 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 15:48:48,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:49,690 INFO L93 Difference]: Finished difference Result 912 states and 1399 transitions. [2021-11-19 15:48:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:48:49,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2021-11-19 15:48:49,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:49,699 INFO L225 Difference]: With dead ends: 912 [2021-11-19 15:48:49,700 INFO L226 Difference]: Without dead ends: 478 [2021-11-19 15:48:49,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:48:49,706 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 59 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:49,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 2936 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 15:48:49,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-19 15:48:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 470. [2021-11-19 15:48:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 282 states have internal predecessors, (346), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-11-19 15:48:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 699 transitions. [2021-11-19 15:48:49,753 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 699 transitions. Word has length 179 [2021-11-19 15:48:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:49,754 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 699 transitions. [2021-11-19 15:48:49,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 15:48:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 699 transitions. [2021-11-19 15:48:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 15:48:49,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:49,759 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:49,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:49,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:49,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:49,975 INFO L85 PathProgramCache]: Analyzing trace with hash 110275706, now seen corresponding path program 1 times [2021-11-19 15:48:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:49,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914656334] [2021-11-19 15:48:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:49,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:49,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:49,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:50,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:48:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:51,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:48:51,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 15:48:52,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-11-19 15:48:54,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:48:54,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914656334] [2021-11-19 15:48:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914656334] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:48:54,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:48:54,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2021-11-19 15:48:54,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479054833] [2021-11-19 15:48:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:54,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:48:54,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:48:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:48:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:48:54,049 INFO L87 Difference]: Start difference. First operand 470 states and 699 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-19 15:48:57,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:48:59,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:59,435 INFO L93 Difference]: Finished difference Result 934 states and 1418 transitions. [2021-11-19 15:48:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:48:59,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2021-11-19 15:48:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:59,443 INFO L225 Difference]: With dead ends: 934 [2021-11-19 15:48:59,444 INFO L226 Difference]: Without dead ends: 500 [2021-11-19 15:48:59,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:48:59,450 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 131 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:59,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 4000 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 15:48:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-19 15:48:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 482. [2021-11-19 15:48:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-19 15:48:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 715 transitions. [2021-11-19 15:48:59,490 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 715 transitions. Word has length 195 [2021-11-19 15:48:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 715 transitions. [2021-11-19 15:48:59,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-19 15:48:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 715 transitions. [2021-11-19 15:48:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 15:48:59,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:59,496 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:48:59,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:59,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:48:59,723 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:48:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2030385312, now seen corresponding path program 2 times [2021-11-19 15:48:59,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:48:59,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934894915] [2021-11-19 15:48:59,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:48:59,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:48:59,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:48:59,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:48:59,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:49:07,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:49:07,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:49:07,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:49:07,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-19 15:49:09,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 15:49:10,501 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:10,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934894915] [2021-11-19 15:49:10,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934894915] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:49:10,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:49:10,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-19 15:49:10,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099900336] [2021-11-19 15:49:10,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:10,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:49:10,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:49:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:49:10,505 INFO L87 Difference]: Start difference. First operand 482 states and 715 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:49:14,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:17,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:19,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:22,612 INFO L93 Difference]: Finished difference Result 964 states and 1492 transitions. [2021-11-19 15:49:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:49:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2021-11-19 15:49:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:22,622 INFO L225 Difference]: With dead ends: 964 [2021-11-19 15:49:22,622 INFO L226 Difference]: Without dead ends: 518 [2021-11-19 15:49:22,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:49:22,628 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 21 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:22,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3029 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2021-11-19 15:49:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-19 15:49:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 490. [2021-11-19 15:49:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 296 states have (on average 1.25) internal successors, (370), 300 states have internal predecessors, (370), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-19 15:49:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 725 transitions. [2021-11-19 15:49:22,669 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 725 transitions. Word has length 210 [2021-11-19 15:49:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:22,670 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 725 transitions. [2021-11-19 15:49:22,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:49:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 725 transitions. [2021-11-19 15:49:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 15:49:22,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:22,675 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:22,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 15:49:22,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:22,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1911943838, now seen corresponding path program 1 times [2021-11-19 15:49:22,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:22,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826011501] [2021-11-19 15:49:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:22,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:22,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:22,894 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:49:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:24,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:49:24,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-19 15:49:26,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 15:49:27,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:27,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826011501] [2021-11-19 15:49:27,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826011501] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:49:27,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:49:27,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-19 15:49:27,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291736445] [2021-11-19 15:49:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:27,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:49:27,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:49:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:49:27,274 INFO L87 Difference]: Start difference. First operand 490 states and 725 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:49:32,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:34,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:36,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:40,655 INFO L93 Difference]: Finished difference Result 974 states and 1502 transitions. [2021-11-19 15:49:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:49:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2021-11-19 15:49:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:40,665 INFO L225 Difference]: With dead ends: 974 [2021-11-19 15:49:40,666 INFO L226 Difference]: Without dead ends: 520 [2021-11-19 15:49:40,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:49:40,670 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 17 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:40,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3675 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 277 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2021-11-19 15:49:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-19 15:49:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 494. [2021-11-19 15:49:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 300 states have (on average 1.2466666666666666) internal successors, (374), 304 states have internal predecessors, (374), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-19 15:49:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 729 transitions. [2021-11-19 15:49:40,706 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 729 transitions. Word has length 210 [2021-11-19 15:49:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:40,706 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 729 transitions. [2021-11-19 15:49:40,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:49:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 729 transitions. [2021-11-19 15:49:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 15:49:40,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:40,710 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:40,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:40,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:49:40,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash 349629412, now seen corresponding path program 1 times [2021-11-19 15:49:40,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:40,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209622986] [2021-11-19 15:49:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:40,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:40,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:40,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:49:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:42,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:49:42,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 152 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-19 15:49:43,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-19 15:49:44,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209622986] [2021-11-19 15:49:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209622986] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:49:44,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [67775284] [2021-11-19 15:49:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:44,879 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:49:44,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:49:44,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:49:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:45,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:49:45,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-19 15:49:46,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-19 15:49:46,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [67775284] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:49:46,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:49:46,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 9, 5] total 10 [2021-11-19 15:49:46,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747133603] [2021-11-19 15:49:46,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:46,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:49:46,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:49:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:49:46,804 INFO L87 Difference]: Start difference. First operand 494 states and 729 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 15:49:49,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:49:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:49:50,187 INFO L93 Difference]: Finished difference Result 921 states and 1370 transitions. [2021-11-19 15:49:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:49:50,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 210 [2021-11-19 15:49:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:49:50,194 INFO L225 Difference]: With dead ends: 921 [2021-11-19 15:49:50,195 INFO L226 Difference]: Without dead ends: 494 [2021-11-19 15:49:50,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:49:50,199 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 2 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:49:50,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2323 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 15:49:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-19 15:49:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-11-19 15:49:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 300 states have (on average 1.2433333333333334) internal successors, (373), 304 states have internal predecessors, (373), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-19 15:49:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 728 transitions. [2021-11-19 15:49:50,232 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 728 transitions. Word has length 210 [2021-11-19 15:49:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:49:50,233 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 728 transitions. [2021-11-19 15:49:50,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 15:49:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 728 transitions. [2021-11-19 15:49:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-19 15:49:50,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:49:50,237 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:49:50,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:49:50,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-19 15:49:50,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:50,651 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:49:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:49:50,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1081596838, now seen corresponding path program 1 times [2021-11-19 15:49:50,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:49:50,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329469597] [2021-11-19 15:49:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:50,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:49:50,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:49:50,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:49:50,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:49:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:52,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:49:52,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-19 15:49:53,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-19 15:49:53,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:49:53,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329469597] [2021-11-19 15:49:53,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329469597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:49:53,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [320598450] [2021-11-19 15:49:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:49:53,995 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:49:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:49:53,996 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:49:53,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:49:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:49:54,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:49:54,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:49:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-19 15:49:55,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:49:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-19 15:49:56,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [320598450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:49:56,880 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:49:56,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 12 [2021-11-19 15:49:56,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131318874] [2021-11-19 15:49:56,881 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:49:56,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:49:56,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:49:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:49:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:49:56,882 INFO L87 Difference]: Start difference. First operand 494 states and 728 transitions. Second operand has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 15:49:59,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:00,477 INFO L93 Difference]: Finished difference Result 918 states and 1375 transitions. [2021-11-19 15:50:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:00,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) Word has length 210 [2021-11-19 15:50:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:00,486 INFO L225 Difference]: With dead ends: 918 [2021-11-19 15:50:00,486 INFO L226 Difference]: Without dead ends: 496 [2021-11-19 15:50:00,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:50:00,490 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 81 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:00,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 3466 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 15:50:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-19 15:50:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-11-19 15:50:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 301 states have (on average 1.2425249169435215) internal successors, (374), 306 states have internal predecessors, (374), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (203), 162 states have call predecessors, (203), 161 states have call successors, (203) [2021-11-19 15:50:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 740 transitions. [2021-11-19 15:50:00,527 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 740 transitions. Word has length 210 [2021-11-19 15:50:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:00,528 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 740 transitions. [2021-11-19 15:50:00,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-19 15:50:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 740 transitions. [2021-11-19 15:50:00,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-19 15:50:00,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:00,533 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:00,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:00,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:00,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:00,947 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:00,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:00,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1824991914, now seen corresponding path program 1 times [2021-11-19 15:50:00,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:00,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755859305] [2021-11-19 15:50:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:00,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:00,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:00,950 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:00,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:50:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:02,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:02,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-19 15:50:03,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-11-19 15:50:04,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:04,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755859305] [2021-11-19 15:50:04,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755859305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:04,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1165985015] [2021-11-19 15:50:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:04,635 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:04,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:04,636 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:04,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:50:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:05,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:50:05,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-19 15:50:07,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-19 15:50:09,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1165985015] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:50:09,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:50:09,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 8] total 15 [2021-11-19 15:50:09,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066222445] [2021-11-19 15:50:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:09,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:09,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:50:09,009 INFO L87 Difference]: Start difference. First operand 496 states and 740 transitions. Second operand has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 8 states have internal predecessors, (92), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-19 15:50:12,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:50:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:14,450 INFO L93 Difference]: Finished difference Result 942 states and 1426 transitions. [2021-11-19 15:50:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:50:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 8 states have internal predecessors, (92), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 218 [2021-11-19 15:50:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:14,458 INFO L225 Difference]: With dead ends: 942 [2021-11-19 15:50:14,458 INFO L226 Difference]: Without dead ends: 518 [2021-11-19 15:50:14,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:50:14,463 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 133 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:14,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 3920 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 15:50:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-19 15:50:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 516. [2021-11-19 15:50:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 320 states have (on average 1.246875) internal successors, (399), 324 states have internal predecessors, (399), 164 states have call successors, (164), 28 states have call predecessors, (164), 30 states have return successors, (204), 164 states have call predecessors, (204), 162 states have call successors, (204) [2021-11-19 15:50:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 767 transitions. [2021-11-19 15:50:14,501 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 767 transitions. Word has length 218 [2021-11-19 15:50:14,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:14,502 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 767 transitions. [2021-11-19 15:50:14,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 8 states have internal predecessors, (92), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-19 15:50:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 767 transitions. [2021-11-19 15:50:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-19 15:50:14,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:14,505 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:14,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:14,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:14,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:14,912 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 716722856, now seen corresponding path program 2 times [2021-11-19 15:50:14,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:14,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690701371] [2021-11-19 15:50:14,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:50:14,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:14,916 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:14,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 15:50:25,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:50:25,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:25,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:25,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-19 15:50:26,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-11-19 15:50:27,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:27,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690701371] [2021-11-19 15:50:27,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690701371] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:27,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [443647579] [2021-11-19 15:50:27,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:50:27,475 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:27,476 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:27,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-19 15:51:03,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:03,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:03,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:51:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-19 15:51:05,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-11-19 15:51:06,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [443647579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:51:06,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:51:06,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7, 7] total 14 [2021-11-19 15:51:06,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475573661] [2021-11-19 15:51:06,655 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:06,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:51:06,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:51:06,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:51:06,657 INFO L87 Difference]: Start difference. First operand 516 states and 767 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 15:51:09,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:10,779 INFO L93 Difference]: Finished difference Result 968 states and 1479 transitions. [2021-11-19 15:51:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:51:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) Word has length 233 [2021-11-19 15:51:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:10,788 INFO L225 Difference]: With dead ends: 968 [2021-11-19 15:51:10,788 INFO L226 Difference]: Without dead ends: 524 [2021-11-19 15:51:10,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:51:10,793 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 152 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:10,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 2874 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 15:51:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-19 15:51:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 516. [2021-11-19 15:51:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 320 states have (on average 1.246875) internal successors, (399), 324 states have internal predecessors, (399), 164 states have call successors, (164), 28 states have call predecessors, (164), 30 states have return successors, (204), 164 states have call predecessors, (204), 162 states have call successors, (204) [2021-11-19 15:51:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 767 transitions. [2021-11-19 15:51:10,828 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 767 transitions. Word has length 233 [2021-11-19 15:51:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:10,829 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 767 transitions. [2021-11-19 15:51:10,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 6 states have call successors, (35) [2021-11-19 15:51:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 767 transitions. [2021-11-19 15:51:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-19 15:51:10,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:10,833 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:10,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:11,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:11,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:11,255 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1003564851, now seen corresponding path program 1 times [2021-11-19 15:51:11,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:11,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145031333] [2021-11-19 15:51:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:11,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:11,258 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:11,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 15:51:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:12,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:51:12,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 194 proven. 3 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 15:51:14,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2021-11-19 15:51:15,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:15,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145031333] [2021-11-19 15:51:15,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145031333] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:15,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [681648696] [2021-11-19 15:51:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:51:15,085 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:15,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:15,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:15,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 15:51:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:51:15,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:51:15,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-19 15:51:17,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-11-19 15:51:19,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [681648696] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:51:19,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:51:19,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 7, 9] total 17 [2021-11-19 15:51:19,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593410450] [2021-11-19 15:51:19,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:51:19,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:51:19,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:51:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:51:19,601 INFO L87 Difference]: Start difference. First operand 516 states and 767 transitions. Second operand has 9 states, 8 states have (on average 12.875) internal successors, (103), 9 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2021-11-19 15:51:23,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:51:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:26,420 INFO L93 Difference]: Finished difference Result 962 states and 1450 transitions. [2021-11-19 15:51:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:51:26,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.875) internal successors, (103), 9 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 249 [2021-11-19 15:51:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:26,428 INFO L225 Difference]: With dead ends: 962 [2021-11-19 15:51:26,429 INFO L226 Difference]: Without dead ends: 518 [2021-11-19 15:51:26,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:51:26,433 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 176 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:26,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 4475 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 654 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-19 15:51:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-19 15:51:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 494. [2021-11-19 15:51:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 300 states have (on average 1.2433333333333334) internal successors, (373), 304 states have internal predecessors, (373), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (189), 162 states have call predecessors, (189), 161 states have call successors, (189) [2021-11-19 15:51:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 725 transitions. [2021-11-19 15:51:26,469 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 725 transitions. Word has length 249 [2021-11-19 15:51:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:26,470 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 725 transitions. [2021-11-19 15:51:26,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.875) internal successors, (103), 9 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2021-11-19 15:51:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 725 transitions. [2021-11-19 15:51:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-19 15:51:26,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:26,473 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:51:26,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:26,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 15:51:26,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,880 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash -172644387, now seen corresponding path program 2 times [2021-11-19 15:51:26,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:26,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059962432] [2021-11-19 15:51:26,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:51:26,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:26,883 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:26,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:51:35,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:51:35,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:35,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:51:35,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 224 proven. 3 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-19 15:51:36,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-19 15:51:37,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:51:37,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059962432] [2021-11-19 15:51:37,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059962432] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:37,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1979925247] [2021-11-19 15:51:37,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:51:37,977 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:51:37,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:51:37,982 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:51:38,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 15:52:13,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:52:13,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:52:13,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 15:52:13,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2021-11-19 15:52:15,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-19 15:52:17,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1979925247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:52:17,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:52:17,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [7, 7] total 16 [2021-11-19 15:52:17,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558150034] [2021-11-19 15:52:17,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:52:17,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:52:17,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:52:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:52:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:52:17,009 INFO L87 Difference]: Start difference. First operand 494 states and 725 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 7 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2021-11-19 15:52:20,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:52:24,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:52:24,396 INFO L93 Difference]: Finished difference Result 922 states and 1374 transitions. [2021-11-19 15:52:24,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:52:24,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 7 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 264 [2021-11-19 15:52:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:52:24,403 INFO L225 Difference]: With dead ends: 922 [2021-11-19 15:52:24,403 INFO L226 Difference]: Without dead ends: 508 [2021-11-19 15:52:24,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:52:24,408 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 119 mSDsluCounter, 4981 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5559 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:52:24,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 5559 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 797 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 15:52:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-19 15:52:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 506. [2021-11-19 15:52:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 306 states have (on average 1.2418300653594772) internal successors, (380), 310 states have internal predecessors, (380), 168 states have call successors, (168), 29 states have call predecessors, (168), 30 states have return successors, (194), 167 states have call predecessors, (194), 166 states have call successors, (194) [2021-11-19 15:52:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 742 transitions. [2021-11-19 15:52:24,456 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 742 transitions. Word has length 264 [2021-11-19 15:52:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:52:24,457 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 742 transitions. [2021-11-19 15:52:24,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 7 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2021-11-19 15:52:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 742 transitions. [2021-11-19 15:52:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-19 15:52:24,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:52:24,460 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:52:24,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:24,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 15:52:24,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:52:24,883 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:52:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:52:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1673815143, now seen corresponding path program 1 times [2021-11-19 15:52:24,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:52:24,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992638841] [2021-11-19 15:52:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:24,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:52:24,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:52:24,886 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:52:24,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 15:52:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:26,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:52:26,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 284 proven. 3 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-19 15:52:28,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:52:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2021-11-19 15:52:29,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:52:29,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992638841] [2021-11-19 15:52:29,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992638841] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:52:29,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1042962490] [2021-11-19 15:52:29,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:52:29,331 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:52:29,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:52:29,332 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:52:29,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f598c665-4625-4c8c-9db7-f68584dd2dcf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-19 15:52:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:52:32,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 15:52:32,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:52:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-11-19 15:52:37,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:35,096 WARN L227 SmtUtils]: Spent 1.94m on a formula simplification. DAG size of input: 109 DAG size of output: 101 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 15:54:50,646 WARN L227 SmtUtils]: Spent 13.25s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 15:54:50,651 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 15:54:50,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771