./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_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_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/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_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/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_3f9592f4-5e01-4922-aa9c-e1955a197101/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 fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:54:14,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:54:14,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:54:14,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:54:14,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:54:14,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:54:14,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:54:14,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:54:14,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:54:14,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:54:14,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:54:14,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:54:14,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:54:14,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:54:14,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:54:14,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:54:14,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:54:14,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:54:14,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:54:14,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:54:14,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:54:14,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:54:14,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:54:14,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:54:14,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:54:14,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:54:14,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:54:14,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:54:14,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:54:14,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:54:14,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:54:14,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:54:14,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:54:14,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:54:14,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:54:14,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:54:14,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:54:14,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:54:14,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:54:14,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:54:14,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:54:14,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:54:14,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:54:14,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:54:14,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:54:14,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:54:14,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:54:14,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:54:14,296 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:54:14,296 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:54:14,296 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:54:14,297 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:54:14,298 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:54:14,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:54:14,298 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:54:14,299 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:54:14,299 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:54:14,299 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:54:14,299 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:54:14,300 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:54:14,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:54:14,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:54:14,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:54:14,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:54:14,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:54:14,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:54:14,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:54:14,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:54:14,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:54:14,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:54:14,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:54:14,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:54:14,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:54:14,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:54:14,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:54:14,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:54:14,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:54:14,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:54:14,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:54:14,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:54:14,306 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_3f9592f4-5e01-4922-aa9c-e1955a197101/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d [2021-11-25 19:54:14,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:54:14,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:54:14,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:54:14,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:54:14,682 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:54:14,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-25 19:54:14,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/data/2fe7464de/16f4cf843112499f82cb93322ae45220/FLAG30d334804 [2021-11-25 19:54:15,667 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:54:15,668 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-25 19:54:15,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/data/2fe7464de/16f4cf843112499f82cb93322ae45220/FLAG30d334804 [2021-11-25 19:54:16,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/data/2fe7464de/16f4cf843112499f82cb93322ae45220 [2021-11-25 19:54:16,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:54:16,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:54:16,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:54:16,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:54:16,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:54:16,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:54:16" (1/1) ... [2021-11-25 19:54:16,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af46e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:16, skipping insertion in model container [2021-11-25 19:54:16,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:54:16" (1/1) ... [2021-11-25 19:54:16,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:54:16,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:54:16,708 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_3f9592f4-5e01-4922-aa9c-e1955a197101/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2021-11-25 19:54:16,718 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_3f9592f4-5e01-4922-aa9c-e1955a197101/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2021-11-25 19:54:17,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,765 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:17,766 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,170 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:54:18,171 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:54:18,173 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:54:18,174 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:54:18,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:54:18,177 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:54:18,178 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:54:18,179 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:54:18,179 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:54:18,180 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:54:18,346 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:54:18,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:54:18,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:54:18,480 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_3f9592f4-5e01-4922-aa9c-e1955a197101/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2021-11-25 19:54:18,481 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_3f9592f4-5e01-4922-aa9c-e1955a197101/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2021-11-25 19:54:18,581 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:18,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:54:18,697 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:54:18,698 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:54:18,699 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:54:18,707 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:54:18,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:54:18,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:54:18,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:54:18,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:54:18,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:54:18,752 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:54:18,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:54:19,064 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:54:19,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19 WrapperNode [2021-11-25 19:54:19,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:54:19,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:54:19,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:54:19,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:54:19,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,273 INFO L137 Inliner]: procedures = 679, calls = 1080, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 214 [2021-11-25 19:54:19,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:54:19,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:54:19,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:54:19,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:54:19,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:54:19,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:54:19,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:54:19,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:54:19,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (1/1) ... [2021-11-25 19:54:19,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:54:19,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:19,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:54:19,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:54:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2021-11-25 19:54:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2021-11-25 19:54:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:54:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:54:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:54:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 19:54:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 19:54:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_linked_list_is_allocated [2021-11-25 19:54:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_linked_list_is_allocated [2021-11-25 19:54:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:54:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2021-11-25 19:54:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2021-11-25 19:54:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:54:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:54:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:54:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:54:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2021-11-25 19:54:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2021-11-25 19:54:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:54:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:54:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:54:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:54:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:54:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:54:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:54:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:54:19,875 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:54:19,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:54:20,417 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:54:20,523 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:54:20,523 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:54:20,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:20 BoogieIcfgContainer [2021-11-25 19:54:20,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:54:20,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:54:20,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:54:20,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:54:20,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:54:16" (1/3) ... [2021-11-25 19:54:20,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b38a4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:54:20, skipping insertion in model container [2021-11-25 19:54:20,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:19" (2/3) ... [2021-11-25 19:54:20,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b38a4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:54:20, skipping insertion in model container [2021-11-25 19:54:20,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:20" (3/3) ... [2021-11-25 19:54:20,535 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2021-11-25 19:54:20,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:54:20,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:54:20,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:54:20,611 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 19:54:20,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:54:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 48 states have internal predecessors, (57), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-25 19:54:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 19:54:20,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:20,646 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 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] [2021-11-25 19:54:20,646 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1308370605, now seen corresponding path program 1 times [2021-11-25 19:54:20,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:20,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545203319] [2021-11-25 19:54:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:20,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:54:21,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545203319] [2021-11-25 19:54:21,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545203319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723634115] [2021-11-25 19:54:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:21,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:21,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:21,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:21,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:54:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:22,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-25 19:54:22,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 19:54:22,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:54:22,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723634115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:22,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:54:22,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2021-11-25 19:54:22,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019359228] [2021-11-25 19:54:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:22,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:54:22,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:54:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:54:22,635 INFO L87 Difference]: Start difference. First operand has 89 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 48 states have internal predecessors, (57), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 7 states, 4 states have (on average 6.25) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 19:54:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:23,186 INFO L93 Difference]: Finished difference Result 166 states and 254 transitions. [2021-11-25 19:54:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:54:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 6.25) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 62 [2021-11-25 19:54:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:23,205 INFO L225 Difference]: With dead ends: 166 [2021-11-25 19:54:23,205 INFO L226 Difference]: Without dead ends: 87 [2021-11-25 19:54:23,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:54:23,223 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 41 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:23,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 509 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:54:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-25 19:54:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-25 19:54:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 43 states have (on average 1.255813953488372) internal successors, (54), 48 states have internal predecessors, (54), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2021-11-25 19:54:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 126 transitions. [2021-11-25 19:54:23,294 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 126 transitions. Word has length 62 [2021-11-25 19:54:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:23,295 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 126 transitions. [2021-11-25 19:54:23,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 6.25) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-25 19:54:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 126 transitions. [2021-11-25 19:54:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 19:54:23,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:23,300 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-25 19:54:23,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:23,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 19:54:23,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash -825605775, now seen corresponding path program 1 times [2021-11-25 19:54:23,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:23,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454192104] [2021-11-25 19:54:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:23,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:54:23,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:23,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454192104] [2021-11-25 19:54:23,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454192104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:23,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36171586] [2021-11-25 19:54:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:23,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:23,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:23,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:54:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:24,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:54:24,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:54:24,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:54:24,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36171586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:24,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:54:24,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-25 19:54:24,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142134294] [2021-11-25 19:54:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:24,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:54:24,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:24,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:54:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:54:24,433 INFO L87 Difference]: Start difference. First operand 87 states and 126 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 19:54:24,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:24,886 INFO L93 Difference]: Finished difference Result 163 states and 243 transitions. [2021-11-25 19:54:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:54:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 64 [2021-11-25 19:54:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:24,897 INFO L225 Difference]: With dead ends: 163 [2021-11-25 19:54:24,897 INFO L226 Difference]: Without dead ends: 90 [2021-11-25 19:54:24,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:54:24,907 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 64 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:24,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 448 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:54:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-25 19:54:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-25 19:54:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 51 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2021-11-25 19:54:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 132 transitions. [2021-11-25 19:54:24,945 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 132 transitions. Word has length 64 [2021-11-25 19:54:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:24,945 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 132 transitions. [2021-11-25 19:54:24,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 19:54:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 132 transitions. [2021-11-25 19:54:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:54:24,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:24,962 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-25 19:54:25,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:25,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:25,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2097948773, now seen corresponding path program 1 times [2021-11-25 19:54:25,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:25,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145479443] [2021-11-25 19:54:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:25,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:54:25,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:25,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145479443] [2021-11-25 19:54:25,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145479443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:25,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634106243] [2021-11-25 19:54:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:25,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:25,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:25,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:25,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:54:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:25,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:54:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:54:26,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:54:26,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634106243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:26,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:54:26,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-11-25 19:54:26,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788725551] [2021-11-25 19:54:26,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:26,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:54:26,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:54:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:54:26,061 INFO L87 Difference]: Start difference. First operand 90 states and 132 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 19:54:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:26,641 INFO L93 Difference]: Finished difference Result 178 states and 274 transitions. [2021-11-25 19:54:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:54:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 66 [2021-11-25 19:54:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:26,649 INFO L225 Difference]: With dead ends: 178 [2021-11-25 19:54:26,651 INFO L226 Difference]: Without dead ends: 102 [2021-11-25 19:54:26,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:54:26,654 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 92 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:26,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 529 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:54:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-25 19:54:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-11-25 19:54:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 53 states have internal predecessors, (59), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2021-11-25 19:54:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions. [2021-11-25 19:54:26,684 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 66 [2021-11-25 19:54:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:26,684 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 135 transitions. [2021-11-25 19:54:26,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 19:54:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions. [2021-11-25 19:54:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:54:26,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:26,687 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-25 19:54:26,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:26,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:26,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -921720928, now seen corresponding path program 1 times [2021-11-25 19:54:26,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:26,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584351463] [2021-11-25 19:54:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:26,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:54:27,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584351463] [2021-11-25 19:54:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584351463] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942304182] [2021-11-25 19:54:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:27,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:27,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:27,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:27,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:54:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:27,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:54:27,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 19:54:27,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:54:27,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942304182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:27,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:54:27,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-25 19:54:27,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500906699] [2021-11-25 19:54:27,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:27,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:54:27,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:54:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:54:27,786 INFO L87 Difference]: Start difference. First operand 92 states and 135 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 19:54:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:27,869 INFO L93 Difference]: Finished difference Result 179 states and 282 transitions. [2021-11-25 19:54:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:54:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-11-25 19:54:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:27,872 INFO L225 Difference]: With dead ends: 179 [2021-11-25 19:54:27,872 INFO L226 Difference]: Without dead ends: 101 [2021-11-25 19:54:27,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:54:27,879 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:27,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 221 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:54:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-25 19:54:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2021-11-25 19:54:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 48 states have (on average 1.25) internal successors, (60), 54 states have internal predecessors, (60), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2021-11-25 19:54:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2021-11-25 19:54:27,902 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 67 [2021-11-25 19:54:27,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:27,903 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2021-11-25 19:54:27,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 19:54:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2021-11-25 19:54:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 19:54:27,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:27,905 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-25 19:54:27,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 19:54:28,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:28,126 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1389593974, now seen corresponding path program 1 times [2021-11-25 19:54:28,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:28,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033078550] [2021-11-25 19:54:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:28,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-25 19:54:28,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:28,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033078550] [2021-11-25 19:54:28,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033078550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:28,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262783352] [2021-11-25 19:54:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:28,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:28,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:28,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:28,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:54:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:28,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 19:54:28,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 19:54:29,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:54:29,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262783352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:29,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:54:29,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 10 [2021-11-25 19:54:29,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378225822] [2021-11-25 19:54:29,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:29,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:54:29,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:54:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:54:29,173 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 8 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 19:54:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:29,542 INFO L93 Difference]: Finished difference Result 178 states and 269 transitions. [2021-11-25 19:54:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:54:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 70 [2021-11-25 19:54:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:29,544 INFO L225 Difference]: With dead ends: 178 [2021-11-25 19:54:29,544 INFO L226 Difference]: Without dead ends: 99 [2021-11-25 19:54:29,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:54:29,546 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 39 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:29,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 615 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:54:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-25 19:54:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2021-11-25 19:54:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 55 states have internal predecessors, (61), 34 states have call successors, (34), 8 states have call predecessors, (34), 10 states have return successors, (42), 32 states have call predecessors, (42), 32 states have call successors, (42) [2021-11-25 19:54:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 137 transitions. [2021-11-25 19:54:29,591 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 137 transitions. Word has length 70 [2021-11-25 19:54:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:29,592 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 137 transitions. [2021-11-25 19:54:29,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-25 19:54:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 137 transitions. [2021-11-25 19:54:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 19:54:29,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:29,596 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-25 19:54:29,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:54:29,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:29,810 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1370238580, now seen corresponding path program 1 times [2021-11-25 19:54:29,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:29,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508756154] [2021-11-25 19:54:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:29,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:54:30,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:30,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508756154] [2021-11-25 19:54:30,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508756154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:30,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586361564] [2021-11-25 19:54:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:30,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:30,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:30,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:54:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:30,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-25 19:54:30,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 19:54:36,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:54:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:54:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586361564] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:54:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [83892762] [2021-11-25 19:54:37,340 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2021-11-25 19:54:37,340 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:54:37,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:54:37,351 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:54:37,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:54:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,619 INFO L354 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2021-11-25 19:54:37,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 101 [2021-11-25 19:54:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 23 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 51 [2021-11-25 19:54:37,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:54:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:54:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:54:37,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:54:37,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-25 19:54:37,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-25 19:54:37,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 43 [2021-11-25 19:54:37,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-25 19:54:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 19:54:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-25 19:54:37,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:37,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:54:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:54:38,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 19:54:38,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-25 19:54:38,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:54:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:54:38,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2021-11-25 19:54:38,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2021-11-25 19:54:38,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:54:38,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2021-11-25 19:54:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:38,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2021-11-25 19:54:38,862 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:54:39,083 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:54:39,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:54:39,128 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:54:39,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:54:50,721 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 168 for LOIs [2021-11-25 19:54:52,378 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 210 for LOIs [2021-11-25 19:55:00,997 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 334 for LOIs [2021-11-25 19:55:01,864 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 189 for LOIs [2021-11-25 19:55:02,112 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2021-11-25 19:55:02,233 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:55:31,987 WARN L227 SmtUtils]: Spent 24.13s on a formula simplification. DAG size of input: 265 DAG size of output: 251 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:55:50,549 WARN L227 SmtUtils]: Spent 18.05s on a formula simplification. DAG size of input: 318 DAG size of output: 290 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:55:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [83892762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:55:55,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:55:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [9, 9, 6] total 44 [2021-11-25 19:55:55,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152228520] [2021-11-25 19:55:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:55:55,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 19:55:55,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:55:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 19:55:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1704, Unknown=6, NotChecked=0, Total=1892 [2021-11-25 19:55:55,758 INFO L87 Difference]: Start difference. First operand 94 states and 137 transitions. Second operand has 26 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:55:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:55:58,029 INFO L93 Difference]: Finished difference Result 277 states and 401 transitions. [2021-11-25 19:55:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 19:55:58,030 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 72 [2021-11-25 19:55:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:55:58,033 INFO L225 Difference]: With dead ends: 277 [2021-11-25 19:55:58,034 INFO L226 Difference]: Without dead ends: 181 [2021-11-25 19:55:58,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 176 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=242, Invalid=2202, Unknown=6, NotChecked=0, Total=2450 [2021-11-25 19:55:58,037 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 118 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 646 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:55:58,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 994 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 543 Invalid, 0 Unknown, 646 Unchecked, 1.4s Time] [2021-11-25 19:55:58,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-25 19:55:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 123. [2021-11-25 19:55:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 74 states have internal predecessors, (82), 39 states have call successors, (39), 13 states have call predecessors, (39), 15 states have return successors, (49), 37 states have call predecessors, (49), 37 states have call successors, (49) [2021-11-25 19:55:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2021-11-25 19:55:58,090 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 72 [2021-11-25 19:55:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:55:58,091 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2021-11-25 19:55:58,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:55:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2021-11-25 19:55:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 19:55:58,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:55:58,093 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-25 19:55:58,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:55:58,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:55:58,307 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:55:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:55:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash -782095385, now seen corresponding path program 1 times [2021-11-25 19:55:58,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:55:58,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676488427] [2021-11-25 19:55:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:58,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:55:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:55:58,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:55:58,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676488427] [2021-11-25 19:55:58,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676488427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:55:58,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487440816] [2021-11-25 19:55:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:55:58,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:55:58,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:55:58,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:55:58,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:55:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:55:59,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 19:55:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:55:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 19:55:59,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:55:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:55:59,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487440816] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:55:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263801596] [2021-11-25 19:55:59,595 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2021-11-25 19:55:59,595 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:55:59,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:55:59,596 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:55:59,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:55:59,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,725 INFO L354 Elim1Store]: treesize reduction 106, result has 33.8 percent of original size [2021-11-25 19:55:59,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 79 [2021-11-25 19:55:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,882 INFO L354 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2021-11-25 19:55:59,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 101 [2021-11-25 19:55:59,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:55:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:59,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:56:00,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:56:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:56:00,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 43 [2021-11-25 19:56:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-25 19:56:00,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-25 19:56:00,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-25 19:56:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2021-11-25 19:56:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2021-11-25 19:56:00,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,583 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:56:00,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 31 [2021-11-25 19:56:00,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:00,596 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 19:56:00,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 18 [2021-11-25 19:56:00,707 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:56:00,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:56:00,735 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:56:00,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:56:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:56:16,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:16,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:56:21,656 INFO L354 Elim1Store]: treesize reduction 4691, result has 0.0 percent of original size [2021-11-25 19:56:21,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 24 select indices, 24 select index equivalence classes, 12 disjoint index pairs (out of 276 index pairs), introduced 29 new quantified variables, introduced 302 case distinctions, treesize of input 3421 treesize of output 1 [2021-11-25 19:56:28,019 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 169 for LOIs [2021-11-25 19:56:31,444 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 277 for LOIs [2021-11-25 19:56:33,747 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 91 for LOIs [2021-11-25 19:56:37,346 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 35 for LOIs [2021-11-25 19:56:37,357 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 20 for LOIs [2021-11-25 19:56:37,362 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2021-11-25 19:56:37,489 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:56:51,087 WARN L227 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 147 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:57:00,159 WARN L227 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 200 DAG size of output: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:57:16,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1263801596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:16,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:57:16,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [5, 9, 6] total 44 [2021-11-25 19:57:16,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099497295] [2021-11-25 19:57:16,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:16,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 19:57:16,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 19:57:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 19:57:16,005 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand has 33 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 10 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-25 19:57:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:28,753 INFO L93 Difference]: Finished difference Result 242 states and 333 transitions. [2021-11-25 19:57:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-25 19:57:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 10 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) Word has length 73 [2021-11-25 19:57:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:28,756 INFO L225 Difference]: With dead ends: 242 [2021-11-25 19:57:28,756 INFO L226 Difference]: Without dead ends: 170 [2021-11-25 19:57:28,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 170 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=224, Invalid=2326, Unknown=0, NotChecked=0, Total=2550 [2021-11-25 19:57:28,759 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 66 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:28,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 748 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 195 Invalid, 0 Unknown, 465 Unchecked, 0.3s Time] [2021-11-25 19:57:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-25 19:57:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 155. [2021-11-25 19:57:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 95 states have internal predecessors, (109), 45 states have call successors, (45), 17 states have call predecessors, (45), 20 states have return successors, (57), 44 states have call predecessors, (57), 43 states have call successors, (57) [2021-11-25 19:57:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 211 transitions. [2021-11-25 19:57:28,799 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 211 transitions. Word has length 73 [2021-11-25 19:57:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:28,799 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 211 transitions. [2021-11-25 19:57:28,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 10 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-25 19:57:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 211 transitions. [2021-11-25 19:57:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 19:57:28,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:28,802 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-25 19:57:28,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:57:29,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:29,022 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1372413686, now seen corresponding path program 1 times [2021-11-25 19:57:29,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:29,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779687054] [2021-11-25 19:57:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:29,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:57:29,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:29,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779687054] [2021-11-25 19:57:29,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779687054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:29,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390973091] [2021-11-25 19:57:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:29,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:29,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:29,314 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:29,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:57:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:29,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-25 19:57:29,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:29,875 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:29,875 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:57:30,033 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-25 19:57:30,050 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:57:30,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-25 19:57:30,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:57:30,129 INFO L354 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2021-11-25 19:57:30,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 64 [2021-11-25 19:57:30,136 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 10 treesize of output 9 [2021-11-25 19:57:30,151 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-25 19:57:30,151 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 1 case distinctions, treesize of input 26 treesize of output 30 [2021-11-25 19:57:30,195 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 15 treesize of output 9 [2021-11-25 19:57:30,206 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 31 treesize of output 23 [2021-11-25 19:57:30,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:57:30,263 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-25 19:57:30,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:57:32,323 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| Int)) (not (= |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_26|) 0)))) is different from true [2021-11-25 19:57:40,505 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27|) 0) |v_ULTIMATE.start_aws_linked_list_swap_contents_~b#1.base_BEFORE_CALL_27|))) is different from true [2021-11-25 19:57:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:57:42,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:42,684 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 54 treesize of output 46 [2021-11-25 19:57:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 19:57:45,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390973091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:57:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [914724469] [2021-11-25 19:57:45,092 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2021-11-25 19:57:45,092 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:45,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:45,093 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:45,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:45,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,246 INFO L354 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2021-11-25 19:57:45,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 101 [2021-11-25 19:57:45,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 23 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 51 [2021-11-25 19:57:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:57:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:57:45,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:57:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:57:45,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,480 INFO L354 Elim1Store]: treesize reduction 76, result has 37.7 percent of original size [2021-11-25 19:57:45,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 61 [2021-11-25 19:57:45,489 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 [2021-11-25 19:57:45,534 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:57:45,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:57:45,542 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 [2021-11-25 19:57:45,575 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:57:45,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:57:45,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:45,638 INFO L354 Elim1Store]: treesize reduction 78, result has 36.1 percent of original size [2021-11-25 19:57:45,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 59 [2021-11-25 19:57:45,674 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 [2021-11-25 19:57:45,710 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:57:45,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:57:45,751 INFO L354 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2021-11-25 19:57:45,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 59 treesize of output 29 [2021-11-25 19:57:45,786 INFO L354 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2021-11-25 19:57:45,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 59 treesize of output 29 [2021-11-25 19:57:45,828 INFO L354 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2021-11-25 19:57:45,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 39 [2021-11-25 19:57:45,838 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 [2021-11-25 19:57:45,870 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:57:45,870 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:57:45,884 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:57:45,884 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 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:57:45,917 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:57:45,917 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:57:45,951 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-25 19:57:45,951 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-25 19:57:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:57:46,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:57:46,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 19:57:46,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-25 19:57:46,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-25 19:57:46,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:57:46,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 19:57:46,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:46,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:57:46,844 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:57:46,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:57:46,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:57:57,692 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 192 for LOIs [2021-11-25 19:57:59,072 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_linked_list_is_allocated with input of size 22 for LOIs [2021-11-25 19:57:59,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:57:59,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:57:59,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:57:59,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:57:59,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:59,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:59,190 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 19:57:59,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 41 [2021-11-25 19:57:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:59,243 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 19:57:59,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 19:57:59,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:57:59,267 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 [2021-11-25 19:57:59,274 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 [2021-11-25 19:57:59,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 19:57:59,321 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 [2021-11-25 19:57:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:57:59,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:59,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2021-11-25 19:57:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 19:57:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 19:57:59,406 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 [2021-11-25 19:57:59,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:57:59,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:57:59,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2021-11-25 19:57:59,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2021-11-25 19:57:59,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 19 [2021-11-25 19:57:59,517 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 [2021-11-25 19:57:59,529 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 [2021-11-25 19:57:59,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 17 [2021-11-25 19:57:59,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-11-25 19:57:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-25 19:57:59,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:57:59,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 7 [2021-11-25 19:57:59,616 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 206 for LOIs [2021-11-25 19:58:00,274 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 15 for LOIs [2021-11-25 19:58:00,276 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2021-11-25 19:58:00,351 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:58:23,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [914724469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:58:23,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:58:23,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [9, 17, 8] total 52 [2021-11-25 19:58:23,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678453702] [2021-11-25 19:58:23,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:58:23,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:58:23,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:58:23,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:58:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2273, Unknown=11, NotChecked=194, Total=2652 [2021-11-25 19:58:23,090 INFO L87 Difference]: Start difference. First operand 155 states and 211 transitions. Second operand has 24 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:58:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:58:42,637 INFO L93 Difference]: Finished difference Result 268 states and 363 transitions. [2021-11-25 19:58:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 19:58:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 73 [2021-11-25 19:58:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:58:42,640 INFO L225 Difference]: With dead ends: 268 [2021-11-25 19:58:42,640 INFO L226 Difference]: Without dead ends: 172 [2021-11-25 19:58:42,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=259, Invalid=3035, Unknown=20, NotChecked=226, Total=3540 [2021-11-25 19:58:42,642 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 68 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:58:42,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 336 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 215 Invalid, 0 Unknown, 90 Unchecked, 0.4s Time] [2021-11-25 19:58:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-25 19:58:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-25 19:58:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 108 states have internal predecessors, (123), 46 states have call successors, (46), 20 states have call predecessors, (46), 23 states have return successors, (58), 45 states have call predecessors, (58), 44 states have call successors, (58) [2021-11-25 19:58:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2021-11-25 19:58:42,680 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 73 [2021-11-25 19:58:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:58:42,681 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2021-11-25 19:58:42,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:58:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2021-11-25 19:58:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 19:58:42,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:58:42,683 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-25 19:58:42,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:58:42,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:42,883 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:58:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:58:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash -714667099, now seen corresponding path program 1 times [2021-11-25 19:58:42,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:58:42,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052681136] [2021-11-25 19:58:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:42,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:58:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:58:43,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:58:43,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052681136] [2021-11-25 19:58:43,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052681136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:58:43,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315379250] [2021-11-25 19:58:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:58:43,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:58:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:58:43,052 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:58:43,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9592f4-5e01-4922-aa9c-e1955a197101/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:58:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:58:43,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 19:58:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:58:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 19:58:43,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:58:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-25 19:58:44,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315379250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:58:44,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1313559459] [2021-11-25 19:58:44,045 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2021-11-25 19:58:44,045 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:58:44,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:58:44,046 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:58:44,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:58:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,175 INFO L354 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2021-11-25 19:58:44,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 101 [2021-11-25 19:58:44,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 23 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 51 [2021-11-25 19:58:44,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:58:44,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:58:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 9 [2021-11-25 19:58:44,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-11-25 19:58:44,352 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:58:44,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:58:44,360 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 [2021-11-25 19:58:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,445 INFO L354 Elim1Store]: treesize reduction 76, result has 37.7 percent of original size [2021-11-25 19:58:44,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 61 [2021-11-25 19:58:44,495 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:58:44,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:58:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,577 INFO L354 Elim1Store]: treesize reduction 78, result has 36.1 percent of original size [2021-11-25 19:58:44,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 59 [2021-11-25 19:58:44,588 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 [2021-11-25 19:58:44,606 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 [2021-11-25 19:58:44,622 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 [2021-11-25 19:58:44,650 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:58:44,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:58:44,689 INFO L354 Elim1Store]: treesize reduction 37, result has 43.9 percent of original size [2021-11-25 19:58:44,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 59 treesize of output 29 [2021-11-25 19:58:44,717 INFO L354 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2021-11-25 19:58:44,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 53 treesize of output 39 [2021-11-25 19:58:44,747 INFO L354 Elim1Store]: treesize reduction 49, result has 45.6 percent of original size [2021-11-25 19:58:44,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 71 treesize of output 41 [2021-11-25 19:58:44,772 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-25 19:58:44,773 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-25 19:58:44,797 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:58:44,797 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:58:44,822 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-25 19:58:44,822 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 1 case distinctions, treesize of input 35 treesize of output 17 [2021-11-25 19:58:44,837 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-25 19:58:44,838 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 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-25 19:58:44,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 19:58:44,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-25 19:58:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:58:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:58:44,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:58:44,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:44,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-25 19:58:44,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-11-25 19:58:45,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:58:45,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2021-11-25 19:58:45,699 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:58:45,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2021-11-25 19:58:45,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:59:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:59:07,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:59:07,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:02,957 WARN L227 SmtUtils]: Spent 1.92m on a formula simplification. DAG size of input: 1191 DAG size of output: 669 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 20:01:02,959 INFO L354 Elim1Store]: treesize reduction 5411, result has 31.6 percent of original size [2021-11-25 20:01:02,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 24 select indices, 24 select index equivalence classes, 11 disjoint index pairs (out of 276 index pairs), introduced 31 new quantified variables, introduced 304 case distinctions, treesize of input 2864 treesize of output 4471 [2021-11-25 20:01:03,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:01:03,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:01:03,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:04:47,846 WARN L227 SmtUtils]: Spent 3.74m on a formula simplification. DAG size of input: 1591 DAG size of output: 824 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 20:04:47,848 INFO L354 Elim1Store]: treesize reduction 6969, result has 29.6 percent of original size [2021-11-25 20:04:47,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 24 select indices, 24 select index equivalence classes, 12 disjoint index pairs (out of 276 index pairs), introduced 32 new quantified variables, introduced 352 case distinctions, treesize of input 4519 treesize of output 6052 [2021-11-25 20:04:49,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:50,398 INFO L354 Elim1Store]: treesize reduction 48, result has 43.5 percent of original size [2021-11-25 20:04:50,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 6154 treesize of output 6119 [2021-11-25 20:04:52,926 INFO L354 Elim1Store]: treesize reduction 148, result has 46.4 percent of original size [2021-11-25 20:04:52,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 6220 treesize of output 6333 [2021-11-25 20:04:53,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:04:54,777 INFO L354 Elim1Store]: treesize reduction 391, result has 35.0 percent of original size [2021-11-25 20:04:54,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 6525 treesize of output 6387