./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P --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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:50:09,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:50:09,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:50:09,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:50:09,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:50:09,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:50:09,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:50:09,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:50:09,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:50:09,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:50:09,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:50:09,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:50:09,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:50:09,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:50:09,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:50:09,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:50:09,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:50:09,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:50:09,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:50:09,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:50:09,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:50:09,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:50:09,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:50:09,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:50:09,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:50:09,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:50:09,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:50:09,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:50:09,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:50:09,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:50:09,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:50:09,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:50:09,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:50:09,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:50:09,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:50:09,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:50:09,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:50:09,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:50:09,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:50:09,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:50:09,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:50:09,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:50:09,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:50:09,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:50:09,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:50:09,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:50:09,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:50:09,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:50:09,392 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:50:09,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:50:09,392 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:50:09,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:50:09,393 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:50:09,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:50:09,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:50:09,393 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:50:09,394 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:50:09,394 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:50:09,394 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:50:09,394 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:50:09,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:50:09,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:50:09,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:50:09,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:50:09,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:50:09,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:50:09,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:50:09,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:50:09,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:50:09,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:50:09,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:50:09,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:50:09,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:50:09,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:50:09,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:50:09,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:50:09,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:50:09,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:50:09,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:50:09,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:50:09,400 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_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-20 23:50:09,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:50:09,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:50:09,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:50:09,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:50:09,666 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:50:09,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-20 23:50:09,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/data/8aaf726d0/4a7e6c5ff2eb430bb5bfcdf8c75e1b45/FLAGe1655e85b [2021-11-20 23:50:10,556 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:50:10,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-20 23:50:10,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/data/8aaf726d0/4a7e6c5ff2eb430bb5bfcdf8c75e1b45/FLAGe1655e85b [2021-11-20 23:50:11,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/data/8aaf726d0/4a7e6c5ff2eb430bb5bfcdf8c75e1b45 [2021-11-20 23:50:11,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:50:11,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:50:11,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:50:11,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:50:11,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:50:11,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:11" (1/1) ... [2021-11-20 23:50:11,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a24a009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:11, skipping insertion in model container [2021-11-20 23:50:11,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:11" (1/1) ... [2021-11-20 23:50:11,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:50:11,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:50:11,558 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_8041b8d4-d9a1-46e1-a686-5447570da7cf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-20 23:50:11,565 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_8041b8d4-d9a1-46e1-a686-5447570da7cf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-20 23:50:12,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,555 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:12,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,043 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:50:13,044 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:50:13,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:50:13,046 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:50:13,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:50:13,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:50:13,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:50:13,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:50:13,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:50:13,051 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:50:13,257 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:50:13,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,398 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,398 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,399 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,401 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,401 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,406 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:50:13,484 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:50:13,505 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_8041b8d4-d9a1-46e1-a686-5447570da7cf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-20 23:50:13,506 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_8041b8d4-d9a1-46e1-a686-5447570da7cf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-20 23:50:13,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,578 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,579 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,581 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:50:13,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:50:13,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:50:13,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:50:13,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:50:13,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:50:13,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:50:13,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:50:13,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:50:13,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:50:13,673 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:50:13,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,745 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,745 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,746 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,746 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,746 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,749 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,755 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:50:13,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:50:14,223 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:50:14,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14 WrapperNode [2021-11-20 23:50:14,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:50:14,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:50:14,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:50:14,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:50:14,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,475 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 919 [2021-11-20 23:50:14,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:50:14,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:50:14,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:50:14,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:50:14,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:50:14,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:50:14,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:50:14,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:50:14,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (1/1) ... [2021-11-20 23:50:14,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:50:14,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:14,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:50:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:50:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2021-11-20 23:50:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2021-11-20 23:50:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 23:50:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 23:50:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 23:50:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 23:50:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:50:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 23:50:14,682 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 23:50:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 23:50:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 23:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:50:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-20 23:50:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-20 23:50:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:50:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 23:50:14,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 23:50:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:50:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:50:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:50:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:50:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:50:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-20 23:50:14,694 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-20 23:50:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 23:50:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 23:50:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:50:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:50:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:50:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:50:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 23:50:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 23:50:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 23:50:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 23:50:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 23:50:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 23:50:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 23:50:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 23:50:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:50:14,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:50:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 23:50:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 23:50:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:50:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:50:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:50:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 23:50:14,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 23:50:14,697 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 23:50:14,698 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 23:50:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 23:50:14,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 23:50:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:50:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:50:14,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:50:14,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:50:14,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:50:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:50:14,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:50:14,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:50:15,109 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:50:15,112 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:50:16,504 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:50:16,780 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:50:16,780 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 23:50:16,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:16 BoogieIcfgContainer [2021-11-20 23:50:16,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:50:16,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:50:16,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:50:16,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:50:16,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:50:11" (1/3) ... [2021-11-20 23:50:16,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b7510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:16, skipping insertion in model container [2021-11-20 23:50:16,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:14" (2/3) ... [2021-11-20 23:50:16,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b7510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:16, skipping insertion in model container [2021-11-20 23:50:16,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:16" (3/3) ... [2021-11-20 23:50:16,793 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-20 23:50:16,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:50:16,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:50:16,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:50:16,884 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 [2021-11-20 23:50:16,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:50:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 150 states have (on average 1.2266666666666666) internal successors, (184), 153 states have internal predecessors, (184), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2021-11-20 23:50:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 23:50:16,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:16,944 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:16,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240495, now seen corresponding path program 1 times [2021-11-20 23:50:16,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:16,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373757147] [2021-11-20 23:50:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:16,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 23:50:17,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:17,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373757147] [2021-11-20 23:50:17,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373757147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:50:17,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46743967] [2021-11-20 23:50:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:17,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:17,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:17,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:17,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:50:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:18,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:50:18,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-20 23:50:18,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:18,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46743967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:18,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:50:18,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-20 23:50:18,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556473211] [2021-11-20 23:50:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:18,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:18,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:50:18,437 INFO L87 Difference]: Start difference. First operand has 290 states, 150 states have (on average 1.2266666666666666) internal successors, (184), 153 states have internal predecessors, (184), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 23:50:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:19,052 INFO L93 Difference]: Finished difference Result 528 states and 786 transitions. [2021-11-20 23:50:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2021-11-20 23:50:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:19,079 INFO L225 Difference]: With dead ends: 528 [2021-11-20 23:50:19,080 INFO L226 Difference]: Without dead ends: 288 [2021-11-20 23:50:19,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:50:19,092 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:19,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 719 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:50:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-20 23:50:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-20 23:50:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 150 states have (on average 1.2) internal successors, (180), 152 states have internal predecessors, (180), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-11-20 23:50:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 404 transitions. [2021-11-20 23:50:19,174 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 404 transitions. Word has length 80 [2021-11-20 23:50:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:19,175 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 404 transitions. [2021-11-20 23:50:19,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 23:50:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 404 transitions. [2021-11-20 23:50:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-20 23:50:19,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:19,193 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 4, 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] [2021-11-20 23:50:19,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:50:19,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1710972060, now seen corresponding path program 1 times [2021-11-20 23:50:19,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:19,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835420377] [2021-11-20 23:50:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:19,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-20 23:50:19,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:19,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835420377] [2021-11-20 23:50:19,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835420377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:50:19,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499642597] [2021-11-20 23:50:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:19,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:19,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:19,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:19,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:50:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:20,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:50:20,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 23:50:20,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:20,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499642597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:20,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:50:20,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-20 23:50:20,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027256795] [2021-11-20 23:50:20,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:20,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:50:20,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:20,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:50:20,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:50:20,425 INFO L87 Difference]: Start difference. First operand 288 states and 404 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 23:50:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:21,134 INFO L93 Difference]: Finished difference Result 548 states and 779 transitions. [2021-11-20 23:50:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:50:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 95 [2021-11-20 23:50:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:21,141 INFO L225 Difference]: With dead ends: 548 [2021-11-20 23:50:21,141 INFO L226 Difference]: Without dead ends: 290 [2021-11-20 23:50:21,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:50:21,144 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 31 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:21,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1313 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:50:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-20 23:50:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-20 23:50:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 151 states have (on average 1.1986754966887416) internal successors, (181), 154 states have internal predecessors, (181), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2021-11-20 23:50:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 413 transitions. [2021-11-20 23:50:21,185 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 413 transitions. Word has length 95 [2021-11-20 23:50:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:21,186 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 413 transitions. [2021-11-20 23:50:21,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 23:50:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 413 transitions. [2021-11-20 23:50:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 23:50:21,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:21,190 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:21,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:21,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 23:50:21,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash -575166717, now seen corresponding path program 1 times [2021-11-20 23:50:21,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:21,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262107456] [2021-11-20 23:50:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:21,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-20 23:50:21,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262107456] [2021-11-20 23:50:21,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262107456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:50:21,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347229751] [2021-11-20 23:50:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:21,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:21,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:21,740 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:21,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:50:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:22,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:50:22,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 23:50:22,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:22,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347229751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:22,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:50:22,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-20 23:50:22,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887736460] [2021-11-20 23:50:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:22,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:50:22,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:50:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 23:50:22,544 INFO L87 Difference]: Start difference. First operand 290 states and 413 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-20 23:50:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:23,388 INFO L93 Difference]: Finished difference Result 563 states and 822 transitions. [2021-11-20 23:50:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:50:23,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 103 [2021-11-20 23:50:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:23,393 INFO L225 Difference]: With dead ends: 563 [2021-11-20 23:50:23,393 INFO L226 Difference]: Without dead ends: 303 [2021-11-20 23:50:23,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:50:23,397 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 44 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:23,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1936 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:50:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-20 23:50:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2021-11-20 23:50:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 159 states have (on average 1.20125786163522) internal successors, (191), 162 states have internal predecessors, (191), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-20 23:50:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 438 transitions. [2021-11-20 23:50:23,491 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 438 transitions. Word has length 103 [2021-11-20 23:50:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:23,492 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 438 transitions. [2021-11-20 23:50:23,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-20 23:50:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 438 transitions. [2021-11-20 23:50:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 23:50:23,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:23,495 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:23,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:23,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:23,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1630734223, now seen corresponding path program 1 times [2021-11-20 23:50:23,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:23,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999183857] [2021-11-20 23:50:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:23,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:23,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:23,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422236435] [2021-11-20 23:50:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:23,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:23,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:23,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:50:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:24,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:50:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-20 23:50:24,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:24,600 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999183857] [2021-11-20 23:50:24,600 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422236435] [2021-11-20 23:50:24,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422236435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:24,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:24,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:50:24,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299236295] [2021-11-20 23:50:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:50:24,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:50:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:50:24,603 INFO L87 Difference]: Start difference. First operand 301 states and 438 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-20 23:50:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:25,201 INFO L93 Difference]: Finished difference Result 580 states and 867 transitions. [2021-11-20 23:50:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:50:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 112 [2021-11-20 23:50:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:25,206 INFO L225 Difference]: With dead ends: 580 [2021-11-20 23:50:25,206 INFO L226 Difference]: Without dead ends: 309 [2021-11-20 23:50:25,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:50:25,209 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 42 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:25,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1631 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:50:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-20 23:50:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2021-11-20 23:50:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 159 states have (on average 1.20125786163522) internal successors, (191), 162 states have internal predecessors, (191), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-20 23:50:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 438 transitions. [2021-11-20 23:50:25,245 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 438 transitions. Word has length 112 [2021-11-20 23:50:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:25,248 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 438 transitions. [2021-11-20 23:50:25,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-20 23:50:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 438 transitions. [2021-11-20 23:50:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 23:50:25,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:25,252 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 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] [2021-11-20 23:50:25,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:25,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:25,480 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1195008377, now seen corresponding path program 1 times [2021-11-20 23:50:25,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:25,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954266065] [2021-11-20 23:50:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:25,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:25,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:25,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910440077] [2021-11-20 23:50:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:25,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:25,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:25,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:25,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:50:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:26,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:50:26,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-20 23:50:26,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:26,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954266065] [2021-11-20 23:50:26,429 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910440077] [2021-11-20 23:50:26,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910440077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:26,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:26,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:50:26,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861220153] [2021-11-20 23:50:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:26,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:50:26,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:50:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:50:26,431 INFO L87 Difference]: Start difference. First operand 301 states and 438 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-20 23:50:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:27,244 INFO L93 Difference]: Finished difference Result 590 states and 881 transitions. [2021-11-20 23:50:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:50:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 120 [2021-11-20 23:50:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:27,249 INFO L225 Difference]: With dead ends: 590 [2021-11-20 23:50:27,249 INFO L226 Difference]: Without dead ends: 319 [2021-11-20 23:50:27,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:50:27,252 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 54 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:27,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2225 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:50:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-20 23:50:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2021-11-20 23:50:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 159 states have (on average 1.20125786163522) internal successors, (191), 162 states have internal predecessors, (191), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-20 23:50:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 438 transitions. [2021-11-20 23:50:27,278 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 438 transitions. Word has length 120 [2021-11-20 23:50:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:27,278 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 438 transitions. [2021-11-20 23:50:27,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-20 23:50:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 438 transitions. [2021-11-20 23:50:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 23:50:27,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:27,281 INFO L514 BasicCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:27,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 23:50:27,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:27,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1414760979, now seen corresponding path program 1 times [2021-11-20 23:50:27,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:27,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226430091] [2021-11-20 23:50:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:27,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:27,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:27,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074348262] [2021-11-20 23:50:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:27,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:27,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:27,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:27,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:50:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:28,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:50:28,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-20 23:50:28,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:28,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:28,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226430091] [2021-11-20 23:50:28,313 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:28,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074348262] [2021-11-20 23:50:28,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074348262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:28,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:28,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:50:28,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586608961] [2021-11-20 23:50:28,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:28,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:50:28,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:50:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:50:28,316 INFO L87 Difference]: Start difference. First operand 301 states and 438 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-20 23:50:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:28,883 INFO L93 Difference]: Finished difference Result 549 states and 812 transitions. [2021-11-20 23:50:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:50:28,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 129 [2021-11-20 23:50:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:28,887 INFO L225 Difference]: With dead ends: 549 [2021-11-20 23:50:28,887 INFO L226 Difference]: Without dead ends: 303 [2021-11-20 23:50:28,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:50:28,890 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 77 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:28,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1915 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 23:50:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-20 23:50:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-20 23:50:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 160 states have (on average 1.2) internal successors, (192), 164 states have internal predecessors, (192), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-11-20 23:50:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 445 transitions. [2021-11-20 23:50:28,947 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 445 transitions. Word has length 129 [2021-11-20 23:50:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:28,947 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 445 transitions. [2021-11-20 23:50:28,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-20 23:50:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 445 transitions. [2021-11-20 23:50:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-20 23:50:28,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:28,950 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:28,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:29,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:29,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:29,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1099098606, now seen corresponding path program 1 times [2021-11-20 23:50:29,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:29,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590867700] [2021-11-20 23:50:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:29,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:29,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:29,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197700417] [2021-11-20 23:50:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:29,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:29,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:29,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:50:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:29,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:50:29,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-20 23:50:30,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:30,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590867700] [2021-11-20 23:50:30,065 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197700417] [2021-11-20 23:50:30,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197700417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:30,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:30,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:50:30,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946740004] [2021-11-20 23:50:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:30,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:50:30,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:50:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:50:30,067 INFO L87 Difference]: Start difference. First operand 303 states and 445 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-20 23:50:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:31,146 INFO L93 Difference]: Finished difference Result 554 states and 827 transitions. [2021-11-20 23:50:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:50:31,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 146 [2021-11-20 23:50:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:31,151 INFO L225 Difference]: With dead ends: 554 [2021-11-20 23:50:31,151 INFO L226 Difference]: Without dead ends: 306 [2021-11-20 23:50:31,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:50:31,154 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 88 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:31,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2227 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:50:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-20 23:50:31,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2021-11-20 23:50:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 161 states have (on average 1.1987577639751552) internal successors, (193), 165 states have internal predecessors, (193), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-11-20 23:50:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 446 transitions. [2021-11-20 23:50:31,177 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 446 transitions. Word has length 146 [2021-11-20 23:50:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:31,178 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 446 transitions. [2021-11-20 23:50:31,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-20 23:50:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 446 transitions. [2021-11-20 23:50:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-20 23:50:31,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:31,181 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:31,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:31,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 23:50:31,395 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1999953910, now seen corresponding path program 2 times [2021-11-20 23:50:31,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:31,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52743362] [2021-11-20 23:50:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:31,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:31,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:31,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26598348] [2021-11-20 23:50:31,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:50:31,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:31,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:31,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:31,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 23:50:32,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-20 23:50:32,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:50:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:50:32,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-20 23:50:33,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:33,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52743362] [2021-11-20 23:50:33,271 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26598348] [2021-11-20 23:50:33,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26598348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:33,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:33,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:50:33,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875477222] [2021-11-20 23:50:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:33,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:50:33,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:50:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:50:33,272 INFO L87 Difference]: Start difference. First operand 304 states and 446 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:50:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:33,927 INFO L93 Difference]: Finished difference Result 558 states and 836 transitions. [2021-11-20 23:50:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:50:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 154 [2021-11-20 23:50:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:33,932 INFO L225 Difference]: With dead ends: 558 [2021-11-20 23:50:33,932 INFO L226 Difference]: Without dead ends: 338 [2021-11-20 23:50:33,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:50:33,935 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 53 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:33,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1900 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:50:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-20 23:50:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 305. [2021-11-20 23:50:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 162 states have (on average 1.1975308641975309) internal successors, (194), 166 states have internal predecessors, (194), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-11-20 23:50:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 447 transitions. [2021-11-20 23:50:33,963 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 447 transitions. Word has length 154 [2021-11-20 23:50:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:33,964 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 447 transitions. [2021-11-20 23:50:33,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:50:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 447 transitions. [2021-11-20 23:50:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-20 23:50:33,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:33,968 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 23:50:34,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:34,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 23:50:34,196 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:34,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash -528844496, now seen corresponding path program 1 times [2021-11-20 23:50:34,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:34,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875015338] [2021-11-20 23:50:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:34,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:34,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:34,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086094] [2021-11-20 23:50:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:34,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:34,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 23:50:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:34,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:50:34,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-20 23:50:35,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:35,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:35,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875015338] [2021-11-20 23:50:35,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:35,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086094] [2021-11-20 23:50:35,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:35,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:35,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:50:35,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117198200] [2021-11-20 23:50:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:35,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:50:35,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:50:35,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:50:35,256 INFO L87 Difference]: Start difference. First operand 305 states and 447 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-20 23:50:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:35,871 INFO L93 Difference]: Finished difference Result 524 states and 775 transitions. [2021-11-20 23:50:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:50:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 176 [2021-11-20 23:50:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:35,875 INFO L225 Difference]: With dead ends: 524 [2021-11-20 23:50:35,875 INFO L226 Difference]: Without dead ends: 311 [2021-11-20 23:50:35,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:50:35,890 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 93 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:35,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2225 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:50:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-20 23:50:35,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2021-11-20 23:50:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 163 states have (on average 1.196319018404908) internal successors, (195), 168 states have internal predecessors, (195), 115 states have call successors, (115), 24 states have call predecessors, (115), 27 states have return successors, (142), 114 states have call predecessors, (142), 113 states have call successors, (142) [2021-11-20 23:50:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 452 transitions. [2021-11-20 23:50:35,913 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 452 transitions. Word has length 176 [2021-11-20 23:50:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:35,914 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 452 transitions. [2021-11-20 23:50:35,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-20 23:50:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 452 transitions. [2021-11-20 23:50:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-20 23:50:35,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:35,917 INFO L514 BasicCegarLoop]: trace histogram [13, 7, 7, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:35,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:36,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:36,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1847784048, now seen corresponding path program 1 times [2021-11-20 23:50:36,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:36,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580048119] [2021-11-20 23:50:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:36,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:36,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:36,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137539676] [2021-11-20 23:50:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:36,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:36,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:36,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041b8d4-d9a1-46e1-a686-5447570da7cf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 23:50:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:36,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:50:36,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-20 23:50:37,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:50:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-20 23:50:37,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580048119] [2021-11-20 23:50:37,777 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:37,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137539676] [2021-11-20 23:50:37,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137539676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:50:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1021380765] [2021-11-20 23:50:37,804 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2021-11-20 23:50:37,805 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:50:37,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:50:37,816 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:50:37,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:50:44,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:44,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:44,351 INFO L244 Elim1Store]: Index analysis took 405 ms [2021-11-20 23:51:15,716 WARN L227 SmtUtils]: Spent 31.26s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:51:15,722 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-20 23:51:15,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-20 23:51:39,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:51:40,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19503 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582 [2021-11-21 00:00:06,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:00:06,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:06,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:06,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:06,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 00:00:06,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:06,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 00:00:06,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:06,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 00:00:07,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:07,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 00:00:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:07,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 00:00:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 00:00:08,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 00:00:08,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 00:00:09,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 00:00:09,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 00:00:09,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-21 00:00:09,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-21 00:00:09,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:00:10,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:00:10,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:00:10,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-21 00:00:10,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-21 00:00:10,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:00:10,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:00:10,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:00:11,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:00:11,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:11,162 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:00:11,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 00:00:11,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:00:11,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:00:11,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:00:11,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:11,424 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:00:11,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 00:00:11,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:00:11,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 00:00:12,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-21 00:00:12,583 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:00:12,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:00:12,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:00:12,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:00:12,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:00:12,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-21 00:00:12,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:00:14,821 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-21 00:00:15,600 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-21 00:01:03,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 00:01:03,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 00:01:03,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:03,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 00:01:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 00:01:04,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 00:01:04,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:01:04,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10