./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:52:50,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:52:50,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:52:50,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:52:50,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:52:50,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:52:50,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:52:50,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:52:50,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:52:50,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:52:50,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:52:50,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:52:50,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:52:50,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:52:50,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:52:50,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:52:50,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:52:50,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:52:50,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:52:50,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:52:50,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:52:50,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:52:50,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:52:50,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:52:50,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:52:50,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:52:50,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:52:50,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:52:50,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:52:50,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:52:50,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:52:50,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:52:50,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:52:50,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:52:50,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:52:50,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:52:50,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:52:50,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:52:50,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:52:50,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:52:50,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:52:50,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:52:50,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:52:50,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:52:50,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:52:50,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:52:50,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:52:50,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:52:50,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:52:50,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:52:50,704 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:52:50,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:52:50,705 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:52:50,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:52:50,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:52:50,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:52:50,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:52:50,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:52:50,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:52:50,707 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:52:50,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:52:50,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:52:50,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:52:50,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:52:50,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:52:50,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:52:50,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:52:50,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:52:50,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:52:50,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:52:50,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:52:50,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:52:50,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:52:50,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:52:50,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:52:50,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:52:50,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:52:50,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:52:50,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:52:50,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:52:50,714 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_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-11-20 23:52:50,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:52:51,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:52:51,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:52:51,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:52:51,013 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:52:51,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-20 23:52:51,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/data/344037598/2c4c2c2497624a8c8f0be36c66379d10/FLAGf98ca3f59 [2021-11-20 23:52:52,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:52:52,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-20 23:52:52,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/data/344037598/2c4c2c2497624a8c8f0be36c66379d10/FLAGf98ca3f59 [2021-11-20 23:52:52,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/data/344037598/2c4c2c2497624a8c8f0be36c66379d10 [2021-11-20 23:52:52,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:52:52,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:52:52,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:52:52,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:52:52,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:52:52,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:52:52" (1/1) ... [2021-11-20 23:52:52,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121cb9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:52, skipping insertion in model container [2021-11-20 23:52:52,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:52:52" (1/1) ... [2021-11-20 23:52:52,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:52:52,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:52:52,996 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_d56747ba-0f5c-4090-85ac-01c9acfd5da4/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-20 23:52:53,003 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_d56747ba-0f5c-4090-85ac-01c9acfd5da4/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-20 23:52:54,059 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:52:54,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:52:54,671 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:52:54,677 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:52:54,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:52:54,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:52:54,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:52:54,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:52:54,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:52:54,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:52:54,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:52:54,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:54,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:52:55,154 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:52:55,171 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_d56747ba-0f5c-4090-85ac-01c9acfd5da4/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4498,4511] [2021-11-20 23:52:55,172 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_d56747ba-0f5c-4090-85ac-01c9acfd5da4/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i[4558,4571] [2021-11-20 23:52:55,217 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:52:55,250 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,250 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,251 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,317 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:52:55,318 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:52:55,318 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:52:55,320 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:52:55,321 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:52:55,321 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:52:55,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:52:55,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:52:55,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:52:55,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:52:55,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:52:55,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:52:55,745 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:52:55,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55 WrapperNode [2021-11-20 23:52:55,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:52:55,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:52:55,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:52:55,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:52:55,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:55,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,048 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 895 [2021-11-20 23:52:56,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:52:56,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:52:56,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:52:56,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:52:56,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:52:56,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:52:56,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:52:56,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:52:56,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (1/1) ... [2021-11-20 23:52:56,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:52:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:52:56,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:52:56,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:52:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:52:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 23:52:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 23:52:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 23:52:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 23:52:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:52:56,281 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:52:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-20 23:52:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-20 23:52:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:52:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 23:52:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 23:52:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:52:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:52:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:52:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:52:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:52:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 23:52:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 23:52:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:52:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:52:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:52:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:52:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 23:52:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 23:52:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 23:52:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 23:52:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 23:52:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 23:52:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-20 23:52:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-20 23:52:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 23:52:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 23:52:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:52:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:52:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 23:52:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 23:52:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-20 23:52:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-20 23:52:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:52:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-20 23:52:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-20 23:52:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:52:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:52:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 23:52:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 23:52:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 23:52:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 23:52:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-20 23:52:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-20 23:52:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:52:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:52:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:52:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:52:56,745 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:52:56,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:52:58,297 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:52:58,502 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:52:58,506 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:52:58,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:52:58 BoogieIcfgContainer [2021-11-20 23:52:58,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:52:58,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:52:58,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:52:58,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:52:58,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:52:52" (1/3) ... [2021-11-20 23:52:58,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254577a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:52:58, skipping insertion in model container [2021-11-20 23:52:58,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:55" (2/3) ... [2021-11-20 23:52:58,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254577a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:52:58, skipping insertion in model container [2021-11-20 23:52:58,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:52:58" (3/3) ... [2021-11-20 23:52:58,531 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-11-20 23:52:58,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:52:58,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:52:58,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:52:58,639 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:52:58,644 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:52:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 132 states have (on average 1.196969696969697) internal successors, (158), 133 states have internal predecessors, (158), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-20 23:52:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-20 23:52:58,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:52:58,695 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:52:58,696 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:52:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:52:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1536676058, now seen corresponding path program 1 times [2021-11-20 23:52:58,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:52:58,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880647913] [2021-11-20 23:52:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:52:58,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:52:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:52:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-20 23:52:59,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:52:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880647913] [2021-11-20 23:52:59,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880647913] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:52:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116161312] [2021-11-20 23:52:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:52:59,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:52:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:52:59,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:52:59,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:53:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:53:00,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:53:00,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:53:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-20 23:53:00,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:53:00,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116161312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:53:00,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:53:00,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-20 23:53:00,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529639799] [2021-11-20 23:53:00,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:53:00,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:53:00,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:53:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:53:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:53:00,721 INFO L87 Difference]: Start difference. First operand has 256 states, 132 states have (on average 1.196969696969697) internal successors, (158), 133 states have internal predecessors, (158), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:53:01,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:53:01,759 INFO L93 Difference]: Finished difference Result 491 states and 736 transitions. [2021-11-20 23:53:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:53:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 99 [2021-11-20 23:53:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:53:01,796 INFO L225 Difference]: With dead ends: 491 [2021-11-20 23:53:01,796 INFO L226 Difference]: Without dead ends: 256 [2021-11-20 23:53:01,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:53:01,814 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 89 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:53:01,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1032 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 23:53:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-20 23:53:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-20 23:53:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-11-20 23:53:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 377 transitions. [2021-11-20 23:53:01,974 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 377 transitions. Word has length 99 [2021-11-20 23:53:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:53:01,975 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 377 transitions. [2021-11-20 23:53:01,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:53:01,976 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 377 transitions. [2021-11-20 23:53:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 23:53:01,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:53:01,992 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:53:02,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:53:02,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:53:02,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:53:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:53:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash -84006546, now seen corresponding path program 1 times [2021-11-20 23:53:02,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:53:02,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503787047] [2021-11-20 23:53:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:02,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:53:02,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:53:02,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217662685] [2021-11-20 23:53:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:02,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:53:02,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:53:02,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:53:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:53:02,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:53:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:53:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-20 23:53:03,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:53:03,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:53:03,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503787047] [2021-11-20 23:53:03,269 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:53:03,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217662685] [2021-11-20 23:53:03,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217662685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:53:03,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:53:03,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:53:03,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133160654] [2021-11-20 23:53:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:53:03,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:53:03,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:53:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:53:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:53:03,275 INFO L87 Difference]: Start difference. First operand 256 states and 377 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:53:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:53:04,645 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2021-11-20 23:53:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:53:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 117 [2021-11-20 23:53:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:53:04,651 INFO L225 Difference]: With dead ends: 471 [2021-11-20 23:53:04,652 INFO L226 Difference]: Without dead ends: 256 [2021-11-20 23:53:04,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:53:04,655 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 156 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:53:04,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1219 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:53:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-20 23:53:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-20 23:53:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2021-11-20 23:53:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 374 transitions. [2021-11-20 23:53:04,689 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 374 transitions. Word has length 117 [2021-11-20 23:53:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:53:04,690 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 374 transitions. [2021-11-20 23:53:04,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:53:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 374 transitions. [2021-11-20 23:53:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 23:53:04,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:53:04,694 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:53:04,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:53:04,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:04,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:53:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:53:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash 343865442, now seen corresponding path program 2 times [2021-11-20 23:53:04,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:53:04,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391272943] [2021-11-20 23:53:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:04,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:53:04,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:53:04,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151752772] [2021-11-20 23:53:04,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:53:04,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:04,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:53:04,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:53:05,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:53:05,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:53:05,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:53:05,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:53:05,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:53:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 23:53:06,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:53:06,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:53:06,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391272943] [2021-11-20 23:53:06,182 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:53:06,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151752772] [2021-11-20 23:53:06,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151752772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:53:06,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:53:06,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:53:06,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782277680] [2021-11-20 23:53:06,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:53:06,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:53:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:53:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:53:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:53:06,186 INFO L87 Difference]: Start difference. First operand 256 states and 374 transitions. Second operand has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 23:53:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:53:06,940 INFO L93 Difference]: Finished difference Result 467 states and 684 transitions. [2021-11-20 23:53:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:53:06,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 126 [2021-11-20 23:53:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:53:06,945 INFO L225 Difference]: With dead ends: 467 [2021-11-20 23:53:06,946 INFO L226 Difference]: Without dead ends: 256 [2021-11-20 23:53:06,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:53:06,948 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 0 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:53:06,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1193 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:53:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-20 23:53:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-20 23:53:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (115), 100 states have call predecessors, (115), 100 states have call successors, (115) [2021-11-20 23:53:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 373 transitions. [2021-11-20 23:53:06,977 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 373 transitions. Word has length 126 [2021-11-20 23:53:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:53:06,978 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 373 transitions. [2021-11-20 23:53:06,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 23:53:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 373 transitions. [2021-11-20 23:53:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 23:53:06,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:53:06,982 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:53:07,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-20 23:53:07,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:07,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:53:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:53:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2071297224, now seen corresponding path program 3 times [2021-11-20 23:53:07,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:53:07,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761256401] [2021-11-20 23:53:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:07,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:53:07,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:53:07,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686718260] [2021-11-20 23:53:07,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:53:07,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:53:07,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:53:07,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:53:07,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:53:07,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:53:07,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:53:07,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:53:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-20 23:53:08,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:53:08,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:53:08,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761256401] [2021-11-20 23:53:08,410 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:53:08,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686718260] [2021-11-20 23:53:08,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686718260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:53:08,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:53:08,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:53:08,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695388847] [2021-11-20 23:53:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:53:08,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:53:08,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:53:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:53:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:53:08,414 INFO L87 Difference]: Start difference. First operand 256 states and 373 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:53:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:53:10,004 INFO L93 Difference]: Finished difference Result 476 states and 694 transitions. [2021-11-20 23:53:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:53:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 135 [2021-11-20 23:53:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:53:10,009 INFO L225 Difference]: With dead ends: 476 [2021-11-20 23:53:10,009 INFO L226 Difference]: Without dead ends: 266 [2021-11-20 23:53:10,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:53:10,012 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 159 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:53:10,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1819 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:53:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-20 23:53:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-20 23:53:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (120), 105 states have call predecessors, (120), 105 states have call successors, (120) [2021-11-20 23:53:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 387 transitions. [2021-11-20 23:53:10,055 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 387 transitions. Word has length 135 [2021-11-20 23:53:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:53:10,056 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 387 transitions. [2021-11-20 23:53:10,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 23:53:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 387 transitions. [2021-11-20 23:53:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-20 23:53:10,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:53:10,060 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:53:10,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:53:10,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:10,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:53:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:53:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -383080950, now seen corresponding path program 1 times [2021-11-20 23:53:10,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:53:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375189058] [2021-11-20 23:53:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:10,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:53:10,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:53:10,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661470535] [2021-11-20 23:53:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:53:10,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:53:10,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:53:10,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:53:10,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:53:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:53:11,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-20 23:53:11,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:53:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 122 proven. 6 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 23:53:11,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:53:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-11-20 23:53:12,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:53:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375189058] [2021-11-20 23:53:12,527 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:53:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661470535] [2021-11-20 23:53:12,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661470535] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:53:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491000589] [2021-11-20 23:53:12,583 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2021-11-20 23:53:12,583 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:53:12,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:53:12,602 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:53:12,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:53:26,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:53:26,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:53:26,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:53:26,791 INFO L244 Elim1Store]: Index analysis took 457 ms [2021-11-20 23:53:46,764 WARN L227 SmtUtils]: Spent 19.81s on a formula simplification. DAG size of input: 1749 DAG size of output: 1163 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:53:46,771 INFO L354 Elim1Store]: treesize reduction 1948, result has 47.2 percent of original size [2021-11-20 23:53:46,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19309 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 194 case distinctions, treesize of input 992 treesize of output 2350 [2021-11-20 23:54:09,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:54:10,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:54:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:54:10,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:54:10,997 INFO L244 Elim1Store]: Index analysis took 1304 ms [2021-11-20 23:54:40,274 WARN L227 SmtUtils]: Spent 29.18s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:54:40,278 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-20 23:54:40,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-20 23:55:05,682 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:55:05,836 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:55:06,591 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:55:09,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:09,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:55:09,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:09,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:55:09,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:09,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-20 23:55:09,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:55:10,622 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 [2021-11-20 23:55:10,632 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 [2021-11-20 23:55:10,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 23:55:10,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-20 23:55:11,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:55:11,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:55:11,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:55:11,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:55:11,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:55:11,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:11,421 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:55:11,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-20 23:55:11,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:55:11,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:55:11,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:55:11,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:11,741 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:55:11,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-20 23:55:13,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-20 23:55:13,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:13,536 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 17 treesize of output 7 [2021-11-20 23:55:13,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:13,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:55:20,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:20,348 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 17 treesize of output 7 [2021-11-20 23:55:25,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:25,414 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 17 treesize of output 7 [2021-11-20 23:55:25,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:25,523 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 17 treesize of output 7 [2021-11-20 23:55:25,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:55:25,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:56:01,669 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:56:01,669 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 15 [2021-11-20 23:56:01,945 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-20 23:56:01,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 [2021-11-20 23:56:04,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:04,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:04,068 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:56:04,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-20 23:56:04,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:04,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:04,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:04,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:04,137 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 23:56:04,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 20 [2021-11-20 23:56:04,169 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:56:04,169 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 11 treesize of output 7 [2021-11-20 23:56:04,197 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:56:04,197 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 11 treesize of output 11 [2021-11-20 23:56:09,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:09,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:09,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:09,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:09,466 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:56:09,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-20 23:56:15,475 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:56:15,476 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 11 treesize of output 11 [2021-11-20 23:56:15,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,538 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:56:15,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-20 23:56:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,583 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:56:15,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 10 [2021-11-20 23:56:15,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-20 23:56:15,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:15,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:56:15,745 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 23:56:15,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 68 treesize of output 20 [2021-11-20 23:56:31,607 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:56:31,980 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:56:32,059 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 59 for LOIs [2021-11-20 23:56:32,329 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 [2021-11-20 23:56:32,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-20 23:56:32,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:32,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:32,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:32,893 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:56:32,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-20 23:56:32,910 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 [2021-11-20 23:56:32,938 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 [2021-11-20 23:56:33,525 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 [2021-11-20 23:56:33,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:33,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:33,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:56:33,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:56:33,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-20 23:56:33,783 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 [2021-11-20 23:56:35,935 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:56:35,935 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 78 treesize of output 80 [2021-11-20 23:56:37,498 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 67 for LOIs [2021-11-20 23:56:37,955 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 108 for LOIs [2021-11-20 23:56:42,011 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 94 for LOIs [2021-11-20 23:56:42,235 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 80 for LOIs [2021-11-20 23:56:51,954 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 87 for LOIs [2021-11-20 23:56:52,366 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2021-11-20 23:56:52,593 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 77 for LOIs [2021-11-20 23:56:54,153 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 54 for LOIs [2021-11-20 23:56:54,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:57:13,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1491000589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:13,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:57:13,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [12, 12] total 63 [2021-11-20 23:57:13,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299015565] [2021-11-20 23:57:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:13,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-20 23:57:13,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:57:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-20 23:57:13,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=3657, Unknown=0, NotChecked=0, Total=3906 [2021-11-20 23:57:13,444 INFO L87 Difference]: Start difference. First operand 266 states and 387 transitions. Second operand has 49 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 16 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2021-11-20 23:57:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:57:19,036 INFO L93 Difference]: Finished difference Result 554 states and 796 transitions. [2021-11-20 23:57:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 23:57:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 16 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) Word has length 144 [2021-11-20 23:57:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:57:19,041 INFO L225 Difference]: With dead ends: 554 [2021-11-20 23:57:19,041 INFO L226 Difference]: Without dead ends: 318 [2021-11-20 23:57:19,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=259, Invalid=3773, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:57:19,046 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 49 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1391 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:57:19,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 3666 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1238 Invalid, 0 Unknown, 1391 Unchecked, 5.1s Time] [2021-11-20 23:57:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-20 23:57:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 311. [2021-11-20 23:57:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 161 states have (on average 1.1677018633540373) internal successors, (188), 163 states have internal predecessors, (188), 117 states have call successors, (117), 31 states have call predecessors, (117), 32 states have return successors, (135), 116 states have call predecessors, (135), 116 states have call successors, (135) [2021-11-20 23:57:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 440 transitions. [2021-11-20 23:57:19,116 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 440 transitions. Word has length 144 [2021-11-20 23:57:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:57:19,117 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 440 transitions. [2021-11-20 23:57:19,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 27 states have internal predecessors, (38), 16 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2021-11-20 23:57:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 440 transitions. [2021-11-20 23:57:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-20 23:57:19,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:19,121 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:19,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 23:57:19,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:57:19,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:57:19,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:19,344 INFO L85 PathProgramCache]: Analyzing trace with hash 168903290, now seen corresponding path program 1 times [2021-11-20 23:57:19,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:57:19,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975393838] [2021-11-20 23:57:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:19,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:57:19,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:57:19,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772703600] [2021-11-20 23:57:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:19,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:57:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:57:19,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:57:19,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:57:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:19,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-20 23:57:19,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:57:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 145 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-20 23:57:20,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:57:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-20 23:57:21,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:57:21,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975393838] [2021-11-20 23:57:21,468 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:57:21,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772703600] [2021-11-20 23:57:21,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772703600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:57:21,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2145169861] [2021-11-20 23:57:21,478 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2021-11-20 23:57:21,478 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:57:21,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:57:21,479 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:57:21,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:57:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:57:28,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:57:28,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:57:28,232 INFO L244 Elim1Store]: Index analysis took 365 ms [2021-11-20 23:57:49,181 WARN L227 SmtUtils]: Spent 20.88s on a formula simplification. DAG size of input: 1749 DAG size of output: 1163 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:57:49,186 INFO L354 Elim1Store]: treesize reduction 1948, result has 47.2 percent of original size [2021-11-20 23:57:49,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19310 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 194 case distinctions, treesize of input 992 treesize of output 2350 [2021-11-20 23:58:20,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:20,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:20,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:21,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:21,226 INFO L244 Elim1Store]: Index analysis took 1227 ms [2021-11-20 23:58:51,918 WARN L227 SmtUtils]: Spent 30.63s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:58:51,921 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-20 23:58:51,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-20 23:59:35,755 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:59:35,853 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:59:36,535 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-20 23:59:38,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:38,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:59:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:38,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-20 23:59:38,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:59:38,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:38,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 23:59:40,475 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 [2021-11-20 23:59:40,492 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 [2021-11-20 23:59:40,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 23:59:40,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-11-20 23:59:40,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:59:40,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:59:40,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:59:40,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-20 23:59:41,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:59:41,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:59:41,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:41,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:59:41,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-20 23:59:41,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:59:41,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-20 23:59:41,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:41,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:59:41,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-20 23:59:43,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-20 23:59:43,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:43,790 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 17 treesize of output 7 [2021-11-20 23:59:43,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:43,825 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 17 treesize of output 7 [2021-11-20 23:59:43,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:43,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:59:44,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:44,447 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 17 treesize of output 7 [2021-11-20 23:59:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:44,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-20 23:59:44,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:44,536 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 17 treesize of output 7 [2021-11-20 23:59:54,555 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-20 23:59:54,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2021-11-20 23:59:54,694 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 [2021-11-20 23:59:58,026 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:59:58,026 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 11 treesize of output 11 [2021-11-20 23:59:58,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-20 23:59:58,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,331 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 23:59:58,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 180 treesize of output 126 [2021-11-20 23:59:58,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,379 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:59:58,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 114 treesize of output 82 [2021-11-20 23:59:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:58,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:58,415 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:59:58,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 73 treesize of output 41 [2021-11-20 23:59:59,363 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:59:59,363 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 11 treesize of output 11 [2021-11-20 23:59:59,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2021-11-20 23:59:59,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,478 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 23:59:59,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 180 treesize of output 126 [2021-11-20 23:59:59,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,519 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:59:59,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 114 treesize of output 82 [2021-11-20 23:59:59,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:59:59,556 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-20 23:59:59,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 73 treesize of output 41 [2021-11-21 00:00:07,480 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 00:00:07,690 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 00:00:07,760 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 59 for LOIs [2021-11-21 00:00:08,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:00:08,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:00:08,515 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 [2021-11-21 00:00:08,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:00:08,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 00:00:08,706 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 [2021-11-21 00:00:09,197 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 [2021-11-21 00:00:09,303 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 [2021-11-21 00:00:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:09,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:00:09,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 00:00:11,815 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-11-21 00:00:11,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 185 [2021-11-21 00:00:28,450 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 108 for LOIs [2021-11-21 00:00:32,871 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 21 treesize of output 19 [2021-11-21 00:00:32,878 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 16 treesize of output 14 [2021-11-21 00:00:33,537 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 21 treesize of output 19 [2021-11-21 00:00:33,546 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 16 treesize of output 14 [2021-11-21 00:00:37,736 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 21 treesize of output 19 [2021-11-21 00:00:37,749 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 16 treesize of output 14 [2021-11-21 00:00:38,091 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 94 for LOIs [2021-11-21 00:00:38,340 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 79 for LOIs [2021-11-21 00:00:38,535 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 67 for LOIs [2021-11-21 00:00:39,138 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 80 for LOIs [2021-11-21 00:00:50,538 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 87 for LOIs [2021-11-21 00:00:50,964 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2021-11-21 00:00:51,187 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 92 for LOIs [2021-11-21 00:00:56,578 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 74 for LOIs [2021-11-21 00:00:57,047 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:01:40,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2145169861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:40,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:01:40,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [13, 13] total 70 [2021-11-21 00:01:40,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427700089] [2021-11-21 00:01:40,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:40,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-21 00:01:40,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-21 00:01:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4576, Unknown=6, NotChecked=0, Total=4830 [2021-11-21 00:01:40,930 INFO L87 Difference]: Start difference. First operand 311 states and 440 transitions. Second operand has 53 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 17 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (24), 17 states have call predecessors, (24), 17 states have call successors, (24) [2021-11-21 00:01:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:53,015 INFO L93 Difference]: Finished difference Result 792 states and 1143 transitions. [2021-11-21 00:01:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-21 00:01:53,016 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 17 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (24), 17 states have call predecessors, (24), 17 states have call successors, (24) Word has length 148 [2021-11-21 00:01:53,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:53,020 INFO L225 Difference]: With dead ends: 792 [2021-11-21 00:01:53,020 INFO L226 Difference]: Without dead ends: 546 [2021-11-21 00:01:53,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=248, Invalid=4576, Unknown=6, NotChecked=0, Total=4830 [2021-11-21 00:01:53,023 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 300 mSDsluCounter, 4660 mSDsCounter, 0 mSdLazyCounter, 4558 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 4825 SdHoareTripleChecker+Invalid, 10247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5655 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:53,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 4825 Invalid, 10247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 4558 Invalid, 0 Unknown, 5655 Unchecked, 11.9s Time] [2021-11-21 00:01:53,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-21 00:01:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 535. [2021-11-21 00:01:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 276 states have (on average 1.173913043478261) internal successors, (324), 277 states have internal predecessors, (324), 208 states have call successors, (208), 48 states have call predecessors, (208), 50 states have return successors, (240), 209 states have call predecessors, (240), 206 states have call successors, (240) [2021-11-21 00:01:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 772 transitions. [2021-11-21 00:01:53,099 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 772 transitions. Word has length 148 [2021-11-21 00:01:53,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:53,099 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 772 transitions. [2021-11-21 00:01:53,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 32 states have (on average 1.28125) internal successors, (41), 29 states have internal predecessors, (41), 17 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (24), 17 states have call predecessors, (24), 17 states have call successors, (24) [2021-11-21 00:01:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 772 transitions. [2021-11-21 00:01:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-21 00:01:53,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:53,103 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:53,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:01:53,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 00:01:53,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:01:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1890985448, now seen corresponding path program 1 times [2021-11-21 00:01:53,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219277149] [2021-11-21 00:01:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:53,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:53,378 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:01:53,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247826050] [2021-11-21 00:01:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:53,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:01:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:01:53,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:01:53,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d56747ba-0f5c-4090-85ac-01c9acfd5da4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:01:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:53,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-21 00:01:53,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:01:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 00:01:54,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:01:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-21 00:01:54,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:54,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219277149] [2021-11-21 00:01:54,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:01:54,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247826050] [2021-11-21 00:01:54,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247826050] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:01:54,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534492786] [2021-11-21 00:01:54,887 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2021-11-21 00:01:54,888 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:01:54,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:01:54,889 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:01:54,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:02:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:02:07,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:02:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:02:07,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:02:07,817 INFO L244 Elim1Store]: Index analysis took 239 ms [2021-11-21 00:02:44,931 WARN L227 SmtUtils]: Spent 37.08s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:02:44,934 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 00:02:44,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 00:03:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:13,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:13,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:13,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19503 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582