./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7 --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 c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:16:43,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:16:43,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:16:43,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:16:43,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:16:43,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:16:43,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:16:43,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:16:43,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:16:43,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:16:43,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:16:43,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:16:43,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:16:43,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:16:43,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:16:43,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:16:43,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:16:43,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:16:43,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:16:43,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:16:43,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:16:43,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:16:43,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:16:43,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:16:43,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:16:43,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:16:43,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:16:43,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:16:43,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:16:43,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:16:43,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:16:43,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:16:43,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:16:43,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:16:43,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:16:43,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:16:43,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:16:43,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:16:43,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:16:43,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:16:43,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:16:43,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:16:43,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:16:43,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:16:43,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:16:43,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:16:43,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:16:43,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:16:43,546 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:16:43,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:16:43,547 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:16:43,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:16:43,547 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:16:43,547 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:16:43,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:16:43,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:16:43,548 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:16:43,548 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:16:43,548 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:16:43,548 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:16:43,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:16:43,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:16:43,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:16:43,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:16:43,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:16:43,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:16:43,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:16:43,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:16:43,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:16:43,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:16:43,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:16:43,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:16:43,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:16:43,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:16:43,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:16:43,552 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:16:43,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:16:43,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:16:43,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:16:43,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:16:43,553 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_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b [2021-11-25 20:16:43,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:16:43,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:16:43,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:16:43,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:16:43,892 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:16:43,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2021-11-25 20:16:43,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/data/157990450/c3defec0d4294ef49037a10df1fef0ec/FLAG5a312346d [2021-11-25 20:16:44,716 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:16:44,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2021-11-25 20:16:44,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/data/157990450/c3defec0d4294ef49037a10df1fef0ec/FLAG5a312346d [2021-11-25 20:16:44,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/data/157990450/c3defec0d4294ef49037a10df1fef0ec [2021-11-25 20:16:44,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:16:44,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:16:44,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:16:44,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:16:44,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:16:44,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:16:44" (1/1) ... [2021-11-25 20:16:44,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1dcbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:44, skipping insertion in model container [2021-11-25 20:16:44,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:16:44" (1/1) ... [2021-11-25 20:16:44,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:16:44,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:16:45,258 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_6db8b196-af02-4e13-ad29-66a8d23ec863/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4504,4517] [2021-11-25 20:16:45,265 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_6db8b196-af02-4e13-ad29-66a8d23ec863/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4564,4577] [2021-11-25 20:16:46,157 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:16:46,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,250 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,643 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:16:46,644 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:16:46,645 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:16:46,646 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:16:46,647 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:16:46,648 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:16:46,649 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:16:46,649 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:16:46,650 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:16:46,651 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:16:46,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:46,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:16:47,046 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:16:47,061 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_6db8b196-af02-4e13-ad29-66a8d23ec863/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4504,4517] [2021-11-25 20:16:47,061 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_6db8b196-af02-4e13-ad29-66a8d23ec863/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4564,4577] [2021-11-25 20:16:47,095 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:16:47,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,181 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:16:47,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:16:47,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:16:47,184 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:16:47,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:16:47,187 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:16:47,187 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:16:47,188 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:16:47,189 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:16:47,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:16:47,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,248 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,249 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:16:47,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:16:47,608 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:16:47,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47 WrapperNode [2021-11-25 20:16:47,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:16:47,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:16:47,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:16:47,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:16:47,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,834 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 804 [2021-11-25 20:16:47,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:16:47,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:16:47,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:16:47,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:16:47,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:16:47,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:16:47,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:16:47,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:16:47,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (1/1) ... [2021-11-25 20:16:47,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:16:47,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:16:48,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:16:48,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:16:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:16:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-25 20:16:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-25 20:16:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-25 20:16:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-25 20:16:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 20:16:48,072 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 20:16:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-25 20:16:48,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-25 20:16:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:16:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 20:16:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 20:16:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:16:48,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:16:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:16:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:16:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:16:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-25 20:16:48,074 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-25 20:16:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:16:48,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:16:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 20:16:48,075 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 20:16:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 20:16:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 20:16:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-25 20:16:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-25 20:16:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-25 20:16:48,077 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-25 20:16:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-25 20:16:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-25 20:16:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:16:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:16:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-25 20:16:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-25 20:16:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-25 20:16:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-25 20:16:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:16:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-25 20:16:48,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-25 20:16:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:16:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:16:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 20:16:48,080 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 20:16:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-25 20:16:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-25 20:16:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-25 20:16:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-25 20:16:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_ensure_capacity [2021-11-25 20:16:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_ensure_capacity [2021-11-25 20:16:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:16:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-25 20:16:48,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-25 20:16:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:16:48,419 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:16:48,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:16:49,716 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:16:49,810 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:16:49,810 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:16:49,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:16:49 BoogieIcfgContainer [2021-11-25 20:16:49,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:16:49,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:16:49,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:16:49,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:16:49,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:16:44" (1/3) ... [2021-11-25 20:16:49,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f3ed9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:16:49, skipping insertion in model container [2021-11-25 20:16:49,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:16:47" (2/3) ... [2021-11-25 20:16:49,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f3ed9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:16:49, skipping insertion in model container [2021-11-25 20:16:49,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:16:49" (3/3) ... [2021-11-25 20:16:49,822 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_ensure_capacity_harness.i [2021-11-25 20:16:49,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:16:49,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:16:49,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:16:49,883 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 [2021-11-25 20:16:49,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:16:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 112 states have internal predecessors, (134), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-25 20:16:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 20:16:49,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:16:49,917 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:16:49,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:16:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:16:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1517059556, now seen corresponding path program 1 times [2021-11-25 20:16:49,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:16:49,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253989392] [2021-11-25 20:16:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:49,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:16:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:16:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 20:16:50,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:16:50,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253989392] [2021-11-25 20:16:50,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253989392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:16:50,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44254899] [2021-11-25 20:16:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:50,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:16:50,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:16:50,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:16:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:16:51,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:16:51,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:16:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 20:16:51,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:16:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44254899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:16:51,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:16:51,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 20:16:51,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052204908] [2021-11-25 20:16:51,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:16:51,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:16:51,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:16:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:16:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:16:51,530 INFO L87 Difference]: Start difference. First operand has 207 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 112 states have internal predecessors, (134), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:16:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:16:52,462 INFO L93 Difference]: Finished difference Result 393 states and 562 transitions. [2021-11-25 20:16:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:16:52,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 71 [2021-11-25 20:16:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:16:52,478 INFO L225 Difference]: With dead ends: 393 [2021-11-25 20:16:52,478 INFO L226 Difference]: Without dead ends: 201 [2021-11-25 20:16:52,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:16:52,491 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 29 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:16:52,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 880 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:16:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-25 20:16:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-25 20:16:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 106 states have (on average 1.179245283018868) internal successors, (125), 109 states have internal predecessors, (125), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2021-11-25 20:16:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2021-11-25 20:16:52,596 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 278 transitions. Word has length 71 [2021-11-25 20:16:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:16:52,597 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-11-25 20:16:52,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:16:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 278 transitions. [2021-11-25 20:16:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 20:16:52,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:16:52,609 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:16:52,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:16:52,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 20:16:52,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:16:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:16:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 717667055, now seen corresponding path program 1 times [2021-11-25 20:16:52,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:16:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281625527] [2021-11-25 20:16:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:52,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:16:52,907 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:16:52,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797795009] [2021-11-25 20:16:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:52,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:52,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:16:52,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:16:52,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:16:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:16:53,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:16:53,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:16:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 20:16:53,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:16:53,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:16:53,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281625527] [2021-11-25 20:16:53,644 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:16:53,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797795009] [2021-11-25 20:16:53,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797795009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:16:53,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:16:53,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:16:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384173154] [2021-11-25 20:16:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:16:53,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:16:53,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:16:53,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:16:53,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:16:53,648 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 20:16:55,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:16:55,225 INFO L93 Difference]: Finished difference Result 370 states and 510 transitions. [2021-11-25 20:16:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:16:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 80 [2021-11-25 20:16:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:16:55,230 INFO L225 Difference]: With dead ends: 370 [2021-11-25 20:16:55,230 INFO L226 Difference]: Without dead ends: 201 [2021-11-25 20:16:55,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:16:55,233 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 94 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:16:55,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1145 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:16:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-25 20:16:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-25 20:16:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 106 states have (on average 1.179245283018868) internal successors, (125), 109 states have internal predecessors, (125), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (74), 70 states have call predecessors, (74), 70 states have call successors, (74) [2021-11-25 20:16:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 272 transitions. [2021-11-25 20:16:55,258 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 272 transitions. Word has length 80 [2021-11-25 20:16:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:16:55,259 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 272 transitions. [2021-11-25 20:16:55,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 20:16:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 272 transitions. [2021-11-25 20:16:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 20:16:55,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:16:55,262 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1] [2021-11-25 20:16:55,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:16:55,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:55,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:16:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:16:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1286962316, now seen corresponding path program 2 times [2021-11-25 20:16:55,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:16:55,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001481359] [2021-11-25 20:16:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:55,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:16:55,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:16:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787312269] [2021-11-25 20:16:55,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:16:55,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:16:55,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:16:55,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:16:56,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 20:16:56,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:16:56,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:16:56,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:16:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 20:16:56,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:16:56,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:16:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001481359] [2021-11-25 20:16:56,195 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:16:56,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787312269] [2021-11-25 20:16:56,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787312269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:16:56,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:16:56,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:16:56,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218004409] [2021-11-25 20:16:56,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:16:56,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:16:56,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:16:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:16:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:16:56,198 INFO L87 Difference]: Start difference. First operand 201 states and 272 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:16:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:16:57,072 INFO L93 Difference]: Finished difference Result 348 states and 463 transitions. [2021-11-25 20:16:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:16:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 89 [2021-11-25 20:16:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:16:57,076 INFO L225 Difference]: With dead ends: 348 [2021-11-25 20:16:57,076 INFO L226 Difference]: Without dead ends: 205 [2021-11-25 20:16:57,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:16:57,078 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:16:57,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 967 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:16:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-25 20:16:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-25 20:16:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 112 states have internal predecessors, (128), 73 states have call successors, (73), 21 states have call predecessors, (73), 22 states have return successors, (75), 71 states have call predecessors, (75), 70 states have call successors, (75) [2021-11-25 20:16:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2021-11-25 20:16:57,099 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 89 [2021-11-25 20:16:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:16:57,100 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2021-11-25 20:16:57,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:16:57,101 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2021-11-25 20:16:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:16:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:16:57,102 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1] [2021-11-25 20:16:57,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:16:57,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:57,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:16:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:16:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1373110104, now seen corresponding path program 1 times [2021-11-25 20:16:57,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:16:57,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610910847] [2021-11-25 20:16:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:57,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:16:57,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:16:57,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834215073] [2021-11-25 20:16:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:57,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:57,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:16:57,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:16:57,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:16:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:16:57,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 20:16:57,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:16:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 20:16:58,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:16:58,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:16:58,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610910847] [2021-11-25 20:16:58,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:16:58,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834215073] [2021-11-25 20:16:58,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834215073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:16:58,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:16:58,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:16:58,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080274087] [2021-11-25 20:16:58,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:16:58,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:16:58,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:16:58,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:16:58,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:16:58,160 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-25 20:16:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:16:59,629 INFO L93 Difference]: Finished difference Result 375 states and 501 transitions. [2021-11-25 20:16:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:16:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 93 [2021-11-25 20:16:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:16:59,632 INFO L225 Difference]: With dead ends: 375 [2021-11-25 20:16:59,632 INFO L226 Difference]: Without dead ends: 203 [2021-11-25 20:16:59,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:16:59,634 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 129 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:16:59,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1313 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:16:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-25 20:16:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-11-25 20:16:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 110 states have internal predecessors, (126), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (71), 71 states have call predecessors, (71), 70 states have call successors, (71) [2021-11-25 20:16:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2021-11-25 20:16:59,652 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 93 [2021-11-25 20:16:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:16:59,653 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2021-11-25 20:16:59,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-25 20:16:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2021-11-25 20:16:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 20:16:59,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:16:59,655 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:16:59,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:16:59,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:59,869 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:16:59,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:16:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash -963749564, now seen corresponding path program 1 times [2021-11-25 20:16:59,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:16:59,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598013598] [2021-11-25 20:16:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:59,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:16:59,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:16:59,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628278661] [2021-11-25 20:16:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:16:59,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:16:59,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:00,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:00,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6db8b196-af02-4e13-ad29-66a8d23ec863/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:17:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:08,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 450 conjunts are in the unsatisfiable core [2021-11-25 20:17:08,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:17:08,417 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 6 treesize of output 5 [2021-11-25 20:17:10,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:10,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:10,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:10,032 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 34 treesize of output 36 [2021-11-25 20:17:11,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:11,640 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 [2021-11-25 20:17:11,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:11,657 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 [2021-11-25 20:17:13,553 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 20:17:13,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2021-11-25 20:17:13,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-11-25 20:17:13,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:17:13,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 50 [2021-11-25 20:17:13,605 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 16 treesize of output 18 [2021-11-25 20:17:32,992 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 20:17:32,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-25 20:18:09,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 40 [2021-11-25 20:18:09,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-11-25 20:18:09,423 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 20:18:09,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 18 [2021-11-25 20:18:09,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:18:09,621 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 20:18:09,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 77 [2021-11-25 20:19:36,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:19:36,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:19:36,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:19:36,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:19:36,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:19:36,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:19:36,394 INFO L354 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2021-11-25 20:19:36,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 124 treesize of output 107 [2021-11-25 20:19:36,597 INFO L354 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2021-11-25 20:19:36,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 50 [2021-11-25 20:19:36,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 20:24:51,034 WARN L227 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 14 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:25:54,806 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 144 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:28:29,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 353 treesize of output 333 [2021-11-25 20:28:30,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 299 treesize of output 287 [2021-11-25 20:28:30,378 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-11-25 20:28:30,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 282 treesize of output 174 [2021-11-25 20:28:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 68 refuted. 1 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 20:28:33,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:28:46,498 WARN L227 SmtUtils]: Spent 11.84s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 20:28:53,595 WARN L227 SmtUtils]: Spent 7.09s on a formula simplification that was a NOOP. DAG size: 175 (called from [L 271] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 20:30:35,766 WARN L227 SmtUtils]: Spent 1.70m on a formula simplification. DAG size of input: 398 DAG size of output: 195 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)