./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/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 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:42:56,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:42:56,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:42:56,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:42:56,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:42:56,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:42:56,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:42:56,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:42:56,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:42:56,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:42:56,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:42:56,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:42:56,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:42:56,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:42:56,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:42:56,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:42:56,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:42:56,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:42:56,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:42:56,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:42:56,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:42:56,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:42:56,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:42:56,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:42:56,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:42:56,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:42:56,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:42:56,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:42:56,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:42:56,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:42:56,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:42:56,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:42:56,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:42:56,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:42:56,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:42:56,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:42:56,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:42:56,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:42:56,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:42:56,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:42:56,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:42:56,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:42:56,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:42:56,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:42:56,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:42:56,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:42:56,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:42:56,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:42:56,841 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:42:56,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:42:56,842 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:42:56,842 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:42:56,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:42:56,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:42:56,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:42:56,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:42:56,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:42:56,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:42:56,845 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:42:56,846 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:42:56,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:42:56,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:42:56,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:42:56,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:42:56,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:42:56,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:42:56,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:42:56,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:42:56,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:42:56,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:42:56,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:42:56,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:42:56,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:42:56,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:42:56,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:42:56,854 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:42:56,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:42:56,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:42:56,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:42:56,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:42:56,856 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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2021-11-21 00:42:57,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:42:57,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:42:57,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:42:57,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:42:57,258 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:42:57,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-11-21 00:42:57,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/data/71dc9e0c0/063cec438d0a45c993a276c43e369695/FLAG37fa6c17b [2021-11-21 00:42:58,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:42:58,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-11-21 00:42:58,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/data/71dc9e0c0/063cec438d0a45c993a276c43e369695/FLAG37fa6c17b [2021-11-21 00:42:58,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/data/71dc9e0c0/063cec438d0a45c993a276c43e369695 [2021-11-21 00:42:58,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:42:58,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:42:58,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:42:58,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:42:58,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:42:58,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:42:58" (1/1) ... [2021-11-21 00:42:58,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a372553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:58, skipping insertion in model container [2021-11-21 00:42:58,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:42:58" (1/1) ... [2021-11-21 00:42:58,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:42:58,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:42:59,403 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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2021-11-21 00:42:59,413 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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2021-11-21 00:43:00,534 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:43:00,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:00,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,234 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:43:01,240 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:43:01,244 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:43:01,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:43:01,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:43:01,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:43:01,276 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:43:01,276 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:43:01,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:43:01,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:43:01,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,556 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:43:01,707 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:43:01,733 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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2021-11-21 00:43:01,734 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_c5bdfdfd-4ef6-46f0-b598-15dc97724269/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2021-11-21 00:43:01,775 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:43:01,793 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,795 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,807 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,849 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:43:01,850 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:43:01,851 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:43:01,852 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:43:01,853 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:43:01,854 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:43:01,854 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:43:01,855 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:43:01,855 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:43:01,856 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:43:01,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,944 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:43:01,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:43:02,425 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:43:02,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02 WrapperNode [2021-11-21 00:43:02,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:43:02,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:43:02,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:43:02,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:43:02,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,678 INFO L137 Inliner]: procedures = 690, calls = 1715, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 681 [2021-11-21 00:43:02,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:43:02,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:43:02,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:43:02,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:43:02,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:43:02,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:43:02,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:43:02,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:43:02,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (1/1) ... [2021-11-21 00:43:02,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:43:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:02,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:43:02,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:43:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:43:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-21 00:43:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-21 00:43:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 00:43:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 00:43:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 00:43:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 00:43:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:43:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 00:43:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 00:43:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:43:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:43:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:43:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:43:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-21 00:43:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-21 00:43:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:43:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:43:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:43:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:43:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:43:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 00:43:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 00:43:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 00:43:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 00:43:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:43:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:43:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:43:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:43:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:43:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 00:43:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 00:43:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 00:43:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 00:43:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:43:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-11-21 00:43:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-11-21 00:43:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-21 00:43:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-21 00:43:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:43:03,292 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:43:03,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:43:05,198 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:43:05,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:43:05,346 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:43:05,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:43:05 BoogieIcfgContainer [2021-11-21 00:43:05,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:43:05,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:43:05,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:43:05,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:43:05,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:42:58" (1/3) ... [2021-11-21 00:43:05,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1601c886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:43:05, skipping insertion in model container [2021-11-21 00:43:05,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:02" (2/3) ... [2021-11-21 00:43:05,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1601c886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:43:05, skipping insertion in model container [2021-11-21 00:43:05,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:43:05" (3/3) ... [2021-11-21 00:43:05,362 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2021-11-21 00:43:05,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:43:05,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:43:05,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:43:05,462 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 [2021-11-21 00:43:05,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:43:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-21 00:43:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 00:43:05,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:05,508 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:05,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1315314645, now seen corresponding path program 1 times [2021-11-21 00:43:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:05,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192718405] [2021-11-21 00:43:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:05,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-21 00:43:06,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:06,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192718405] [2021-11-21 00:43:06,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192718405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:43:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972020238] [2021-11-21 00:43:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:06,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:06,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:06,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:43:06,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:43:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:07,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:43:07,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:43:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-11-21 00:43:07,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:43:07,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972020238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:07,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:43:07,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 00:43:07,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050374198] [2021-11-21 00:43:07,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:07,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:07,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:07,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:43:07,858 INFO L87 Difference]: Start difference. First operand has 137 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:43:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:08,650 INFO L93 Difference]: Finished difference Result 270 states and 378 transitions. [2021-11-21 00:43:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:43:08,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 133 [2021-11-21 00:43:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:08,677 INFO L225 Difference]: With dead ends: 270 [2021-11-21 00:43:08,678 INFO L226 Difference]: Without dead ends: 137 [2021-11-21 00:43:08,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:43:08,687 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 24 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:08,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 550 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 00:43:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-21 00:43:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-21 00:43:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2021-11-21 00:43:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2021-11-21 00:43:08,781 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 133 [2021-11-21 00:43:08,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:08,783 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2021-11-21 00:43:08,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:43:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2021-11-21 00:43:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 00:43:08,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:08,796 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:08,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:43:09,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:09,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:09,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 53104247, now seen corresponding path program 1 times [2021-11-21 00:43:09,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:09,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001375763] [2021-11-21 00:43:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:09,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:09,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:43:09,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911701539] [2021-11-21 00:43:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:09,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:09,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:09,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:43:09,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:43:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:09,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:43:09,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:43:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-21 00:43:10,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:43:10,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:10,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001375763] [2021-11-21 00:43:10,297 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:43:10,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911701539] [2021-11-21 00:43:10,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911701539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:10,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:10,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:10,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904173611] [2021-11-21 00:43:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:10,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:10,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:10,307 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:43:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:10,910 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2021-11-21 00:43:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:43:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 142 [2021-11-21 00:43:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:10,915 INFO L225 Difference]: With dead ends: 236 [2021-11-21 00:43:10,915 INFO L226 Difference]: Without dead ends: 137 [2021-11-21 00:43:10,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:43:10,922 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:10,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 547 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:43:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-21 00:43:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-21 00:43:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2021-11-21 00:43:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2021-11-21 00:43:10,972 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 142 [2021-11-21 00:43:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:10,972 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2021-11-21 00:43:10,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:43:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2021-11-21 00:43:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-21 00:43:10,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:10,976 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:43:11,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:43:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 00:43:11,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -811212753, now seen corresponding path program 2 times [2021-11-21 00:43:11,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:11,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884815568] [2021-11-21 00:43:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:11,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:11,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:43:11,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454554839] [2021-11-21 00:43:11,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:43:11,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:11,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:11,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:43:11,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:43:12,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:43:12,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:43:12,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:43:12,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:43:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-21 00:43:12,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:43:12,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:12,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884815568] [2021-11-21 00:43:12,534 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:43:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454554839] [2021-11-21 00:43:12,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454554839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:12,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:12,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:12,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930920219] [2021-11-21 00:43:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:12,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:12,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:12,537 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:43:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:13,878 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2021-11-21 00:43:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:43:13,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 151 [2021-11-21 00:43:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:13,882 INFO L225 Difference]: With dead ends: 201 [2021-11-21 00:43:13,883 INFO L226 Difference]: Without dead ends: 137 [2021-11-21 00:43:13,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:13,885 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:13,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:43:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-21 00:43:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-21 00:43:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (54), 51 states have call predecessors, (54), 51 states have call successors, (54) [2021-11-21 00:43:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-11-21 00:43:13,926 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 151 [2021-11-21 00:43:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:13,927 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-11-21 00:43:13,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 00:43:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-11-21 00:43:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-21 00:43:13,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:13,932 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:43:13,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:43:14,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:14,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1427972551, now seen corresponding path program 3 times [2021-11-21 00:43:14,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:14,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872479165] [2021-11-21 00:43:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:14,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:14,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:43:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319366372] [2021-11-21 00:43:14,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:43:14,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:14,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:43:14,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:43:14,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:43:14,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:43:14,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:43:14,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:43:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-21 00:43:15,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:43:15,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872479165] [2021-11-21 00:43:15,428 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:43:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319366372] [2021-11-21 00:43:15,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319366372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:15,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:15,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:43:15,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030113055] [2021-11-21 00:43:15,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:15,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:43:15,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:15,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:43:15,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:43:15,432 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-21 00:43:17,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:17,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:17,643 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2021-11-21 00:43:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:43:17,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 160 [2021-11-21 00:43:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:17,647 INFO L225 Difference]: With dead ends: 206 [2021-11-21 00:43:17,647 INFO L226 Difference]: Without dead ends: 137 [2021-11-21 00:43:17,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:43:17,649 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 21 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:17,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 671 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:43:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-21 00:43:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-21 00:43:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 71 states have internal predecessors, (78), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2021-11-21 00:43:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2021-11-21 00:43:17,670 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 160 [2021-11-21 00:43:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:17,671 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2021-11-21 00:43:17,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2021-11-21 00:43:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2021-11-21 00:43:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-21 00:43:17,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:17,675 INFO L514 BasicCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:17,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:43:17,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:17,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:17,891 INFO L85 PathProgramCache]: Analyzing trace with hash -539264431, now seen corresponding path program 1 times [2021-11-21 00:43:17,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:17,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375953514] [2021-11-21 00:43:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:17,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:17,967 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:43:17,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522074429] [2021-11-21 00:43:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:17,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:17,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:17,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:43:17,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5bdfdfd-4ef6-46f0-b598-15dc97724269/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:43:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:19,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 328 conjunts are in the unsatisfiable core [2021-11-21 00:43:19,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:43:19,940 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:43:19,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 00:43:20,805 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-21 00:43:20,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 29 [2021-11-21 00:43:22,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:22,424 INFO L354 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2021-11-21 00:43:22,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 25 treesize of output 48 [2021-11-21 00:43:52,356 INFO L354 Elim1Store]: treesize reduction 184, result has 10.2 percent of original size [2021-11-21 00:43:52,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 216 [2021-11-21 00:45:45,275 INFO L354 Elim1Store]: treesize reduction 162, result has 21.0 percent of original size [2021-11-21 00:45:45,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 200 [2021-11-21 00:46:00,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 145 [2021-11-21 00:46:00,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 141 [2021-11-21 00:46:00,103 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:46:00,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 141 treesize of output 93 [2021-11-21 00:46:08,605 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 00:46:08,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 224 treesize of output 200 [2021-11-21 00:46:08,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 182 [2021-11-21 00:46:08,824 INFO L354 Elim1Store]: treesize reduction 223, result has 20.4 percent of original size [2021-11-21 00:46:08,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 180 treesize of output 220 [2021-11-21 00:46:46,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:46:46,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 140 [2021-11-21 00:48:18,658 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:48:18,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-21 00:48:18,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:48:18,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-21 00:52:44,667 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-21 00:53:09,537 INFO L354 Elim1Store]: treesize reduction 112, result has 33.7 percent of original size [2021-11-21 00:53:09,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 169 treesize of output 211 [2021-11-21 00:53:09,758 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-11-21 00:53:09,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 193 treesize of output 189 [2021-11-21 00:54:17,123 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-21 00:54:19,133 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-21 00:54:19,416 INFO L354 Elim1Store]: treesize reduction 68, result has 36.4 percent of original size [2021-11-21 00:54:19,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 111 treesize of output 134 [2021-11-21 00:56:17,623 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-11-21 00:56:17,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 167 [2021-11-21 00:56:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 165 [2021-11-21 00:56:17,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:17,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:17,685 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:56:17,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 163 [2021-11-21 00:56:17,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:17,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:17,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:56:17,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:17,769 INFO L354 Elim1Store]: treesize reduction 126, result has 28.0 percent of original size [2021-11-21 00:56:17,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 169 treesize of output 160 [2021-11-21 00:56:31,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 262 [2021-11-21 00:56:31,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 256 [2021-11-21 00:56:42,728 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:56:42,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 100